List_of_freshwater_aquarium_fish_species

List of freshwater aquarium fish species

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A vast number of freshwater species have successfully adapted to live in aquariums. This list gives some examples of the most common species found in home aquariums.

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This article uses material from the Wikipedia article List_of_freshwater_aquarium_fish_species, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.

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Common name	Scientific name	Size	Remarks	Tank size	Temperature range	pH range
Agassiz's corydoras	Corydoras agassizii	5 cm (2 in)
Brown-Point Shield Skin	Aspidoras fuscoguttatus	3.8 cm (1.5 in)		30 Gallons	22–25 °C (72–77 °F)^[1]	5.5–6.8^[1]
Aspidoras Cory-Cat	Aspidoras lakoi	4 cm (1.6 in)^[2]		28 Gallons	22–25 °C (72–77 °F)
Loach catfish	Aspidoras rochai	4 cm (1.6 in) maximum length^[3]		20 Gallons	21 – 25 degrees Celsius^[3]	6.0-7.5^[3]
Sixray corydoras, false corydoras	Aspidoras pauciradiatus	2.9 cm (1.1 in)^[4]		20 Gallons	73–82 °F (23–28 °C)	6.0-7.2^[4]
Britski's catfish	Brochis britskii	8.9 cm (3.5 in)			20–24 °C (68–75 °F)	6.5-7.2^[5]
Emerald catfish	Brochis splendens	10 cm (3.9 in)	The Emerald Cory Catfish is a very hardy and resilient fish. Disease should not be a concern provided that you maintain the aquarium to standards.^[6]	20 Gallons	72 - 82 F (22 - 27.7 C)^[6]	5.8-8.0^[7]
Hognosed brochis	Brochis multiradiatus	6.6 cm (2.6 in)			70-75 °F (21-24 °C)	6.0-7.2
Adolfo's catfish/corydoras	Corydoras adolfoi	5.7 cm (2.2 in)			72–79 °F (22–26 °C)	6.0-7.0
Banded corydoras	Scleromystax barbatus	10 cm (3.9 in)			68 °F (20 °C) to 82 °F (28 °C)	6.0–8.0
Masked corydoras, bandit corydoras	Corydoras metae	4.8 cm (1.9 in)			72–79 °F (22–26 °C)	6.0-7.0
Barred-tail corydoras	Corydoras cochui	2.5 cm (0.98 in)			70-75 °F	6.0 - 7.0
Blackstripe corydoras	Corydoras bondi	4.7 cm (1.9 in)
Blacktop corydoras	Corydoras acutus	4.4 cm (1.7 in)
Blue corydoras	Corydoras nattereri	5.4 cm (2.1 in)
Bluespotted corydoras	Corydoras melanistius	5.1 cm (2.0 in)
Bronze corydoras, Emerald green cory	Corydoras aeneus	6.35 cm (2.50 in)			77 to 82 °F (25 to 28 °C)
Caracha	Corydoras atropersonatus	4.5 cm (1.8 in)
Ehrhardt's corydoras	Corydoras ehrhardti	4.1 cm (1.6 in)
Evelyn's cory	Corydoras evelynae	4 cm (1.6 in)
	Corydoras geoffroy	7 cm (2.8 in)
	Corydoras latus	5.2 cm (2.0 in)
Loxozonus cory	Corydoras loxozonus	4.9 cm (1.9 in)
Corydoras nain	Corydoras nanus	4.5 cm (1.8 in)
Long nosed arched cory	Corydoras narcissus	6.5 cm (2.6 in)
	Corydoras ornatus	4.9 cm (1.9 in)
	Corydoras osteocarus	4 cm (1.6 in)
	Corydoras polystictus	3.2 cm (1.3 in)
	Scleromystax prionotos	5.3 cm (2.1 in)
	Corydoras semiaquilus	6.0 cm (2.4 in)
	Corydoras septentrionalis	4.9 cm (1.9 in)
	Corydoras simulatus	4.9 cm (1.9 in)
	Corydoras undulatus	4.4 cm (1.7 in)
Dwarf corydoras	Corydoras hastatus	3.5 cm (1.4 in)
Elegant corydoras	Corydoras elegans	5.1 cm (2.0 in)
False blochi catfish	Corydoras delphax	5 cm (2 in)
False network catfish	Corydoras sodalis	4.9 cm (1.9 in)
False spotted catfish	Corydoras leucomelas	4.5 cm (1.8 in)
Banner-tail corydoras, flagtail corydoras	Corydoras robineae	4.4 cm (1.7 in)
Gold laser cory	Corydoras melanotaenia	5.8 cm (2.3 in)
Guapore corydoras	Corydoras guapore	4.1 cm (1.6 in)
Horseman's cory	Corydoras eques	5 cm (2 in)
Mosaic corydoras, reticulated corydoras	Corydoras haraldschultzi	5.9 cm (2.3 in)^[8]
Mosaic corydoras, reticulated corydoras	Corydoras reticulatus	5.1–6.1 cm (2.0–2.4 in)
Panda corydoras	Corydoras panda	3.8–5.1 cm (1.5–2.0 in)				6.0-8.0^[9]
Pastaza corydoras	Corydoras pastazensis	6.4–7.1 cm (2.5–2.8 in)
Peppered corydoras, salt and pepper catfish	Corydoras paleatus	5.1–7.6 cm (2.0–3.0 in)
Pink corydoras	Corydoras axelrodi	4–5 cm (1.5–2 in)
Pygmy corydoras	Corydoras pygmaeus	2.5–3.3 cm (0.98–1.30 in)	A very peaceful species, that does not make an ideal community fish due to its small adult size. It is easily intimidated by larger tank mates and will not compete well with them for food.^[10]	42.4 L (11 gal)^[10]	72 to 79 °F (22 to 26 °C)^[10]	6.4 to 7.4^[10]
Rust corydoras	Corydoras rabauti	5 cm (2 in)
Sailfin corydoras	Scleromystax macropterus	8.7 cm (3.4 in)				6.0 – 8.0
Salt and pepper catfish/corydoras	Corydoras habrosus	2.5–3.6 cm (0.98–1.42 in)
Schwartz's catfish	Corydoras schwartzi	3.8–5.1 cm (1.5–2.0 in)
Skunk corydoras	Corydoras granti	5.5 cm (2.2 in)
Spotted corydoras, longnose corydoras	Corydoras ambiacus	5.1–6.1 cm (2.0–2.4 in)
Sterba's corydoras	Corydoras sterbai	6.8 cm (2.7 in)^[11]
Sychr's catfish	Corydoras sychri	4.3 cm (1.7 in)
Tailspot corydoras	Corydoras caudimaculatus	4–5 cm (1.5–2 in)
Threestripe corydoras, leopard catfish, false julii cory	Corydoras trilineatus	6.1 cm (2.4 in)^[12]
Xingu corydoras	Corydoras xinguensis	3.8–5.1 cm (1.5–2.0 in)
Julii corydoras	Corydoras julii	5.1–6.4 cm (2.0–2.5 in)
Flagtail catfish	Dianema urostriatum	12.5 cm (4.9 in)			77–82 °F (25–28 °C)	6.0-8.0
Cascarudo	Callichthys callichthys	20 cm (7.9 in)			64–83 °F (18–28 °C).	5.8-8.3
Spotted hoplo	Megalechis thoracata	15 cm (5.9 in)			64–83 °F (18–28 °C).	6-8

Common name	Scientific name	Size	Remarks	Tank size	Temperature range	pH range
Bristlenose pleco, bushynose pleco	Ancistrus sp.		The bristlenose genus has at least 59 identified species and many others yet to be named.^[13] Males and female both have long "bristles" on their nose, the males having distinctly longer ones.		72-84 F (20-27 C)
Adonis pleco, polka dot lyre-tail pleco	Acanthicus adonis	100 cm (39 in)			77-86 F (25-30 C)
	Ancistomus sp.
Gold nugget pleco	Baryancistrus sp.				77-86 F (25-30 C)
	Dekeyseria sp.
	Hemiancistrus sp.
Zebra pleco	Hypancistrus sp.
	Hypostomus sp.				72-86 F (22-30 C)^[14]	6.5-7.5^[14]
	Lasiancistrus sp.
	Leporacanthicus sp.
Panaque	Panaque sp.
Clown Pleco	Panaqolus sp.			20 gal^[15]^[16]	23.0-28.0 °C or 73.4-82.4 °F^[17]	6.8 - 7.6^[17]
	Peckoltia sp.
	Pseudacanthicus sp.
Pineapple pleco, orange cheek pleco	Pseudorinelepis genibarbis	36 cm (14 in)
Sunshine pleco	Scobinancistrus aureatus	25 cm (9.8 in)
Whiptail catfish	Rineloricaria sp.		It is a peaceful fish that is best kept in good sized groups (6+) in a mature tank with plenty of shady hiding spots amongst plants, driftwood, slate caves, and PVC pipes.^[18]		75-82 F (24-28 C)^[18]	6.0-7.2^[18]
Twig catfish	Farlowella sp.
	Sturisomatichthys sp.
	Hypoptopoma sp.
Golden dwarf sucker, golden oto	Otocinclus macrospilus	3.5 cm (1.4 in)
Zebra dwarf sucker, zebra oto	Otocinclus cocama	4.5 cm (1.8 in)

Common name	Scientific name	Size	Tank size	Temperature range	pH range
Bolt catfish	Aguarunichthys torosus	35 cm (14 in)
Gold Zebra catfish	Brachyplatystoma juruense	60 cm (24 in)
Zebra shovelnose	Brachyplatystoma tigrinum	60 cm (24 in)
Vulture Catfish, zamurito	Calophysus macropterus	40 cm (16 in)
	Leiarius marmoratus	100 cm (39 in)
	Leiarius pictus	60 cm (24 in)
Redtail catfish	Phractocephalus hemioliopterus	120 cm (47 in)	Needs at least a 2,600 US gallons (9,800 L) tank when mature, even though this does not provide them with the space to show their natural behaviour.^[19]	70–79 °F (21–26 °C)^[19]	6.0–7.5^[19]
Spotted pimelodus, pictus, pictus catfish	Pimelodus pictus	30 cm (12 in)
Sturgeon catfish	Platystomatichthys sturio	40 cm (16 in)
Barred sorubim	Pseudoplatystoma fasciatum	104 cm (41 in)
Tiger sorubim	Pseudoplatystoma tigrinum	130 cm (51 in)
Firewood catfish, (planiceps) shovelnose catfish	Sorubimichthys planiceps	178 cm (70 in)
Lima shovelnose catfish	Sorubim lima	40 cm (16 in)

Common name	Scientific name	Size	Remarks	Temperature range	pH range
Brichard's syno	Synodontis brichardi	15 cm (5.9 in)
Cuckoo squeaker	Synodontis multipunctatus	27.5 cm (10.8 in)
Clown squeaker	Synodontis decorus	32 cm (13 in)
Even-spotted squeaker, dwarf lake syno, false cuckoo syno	Synodontis petricola	10 cm (3.9 in)
Featherfin squeaker	Synodontis eupterus	30 cm (12 in)
Malawi squeaker	Synodontis njassae	19 cm (7.5 in)
Polka dot squeaker, angel squeaker	Synodontis angelicus	55 cm (22 in)
Orangestriped squeaker, pyjama syno	Synodontis flavitaeniata	19.5 cm (7.7 in)
Upside-down catfish	Synodontis nigriventris	9.6 cm (3.8 in)	S. nigriventris prefers bottom feeding on Tubifex (or similar worms), but its main diet consists of algae.^[20] The blotched upside-down catfish is well suited to aquariums because of its small size (typically 9 or 10 cm or less) and peaceful demeanor.^{[citation needed]}	72–82 °F (22–28 °C)^[21]	6.0 - 7.5^[21]
Yellow marbled syno, vermiculated syno	Synodontis schoutedeni	17 cm (6.7 in)

Common name	Scientific name	Size	Remarks
Three-striped African catfish	Pareutropius buffei	11.5 cm (4.5 in)
Giraffe catfish	Auchenoglanis occidentalis	70 cm (28 in)
Electric catfish	Malapterurus electricus	122 cm (48 in)
Eel catfish	Channallabes apus	33 cm (13 in)
Black lancer catfish	Bagrichthys macracanthus	25 cm (9.8 in)
Harlequin lancer catfish	Bagroides melapterus	30 cm (12 in)
Crystal-eyed catfish	Hemibagrus wyckii	71 cm (28 in)
Shadow catfish	Hyalobagrus flavus	4.5 cm (1.8 in)
	Mystus bimaculatus	6.5 cm (2.6 in)
Dwarf bumblebee catfish	Pseudomystus leiacanthus	6 cm (2.4 in)
	Pseudeutropius moolenburghae	10 cm (3.9 in)
Glass catfish	Kryptopterus vitreolus	8 cm (3.1 in).
Striped glass catfish	Kryptopterus macrocephalus	10 cm (3.9 in).
Goonch	Bagarius lica	200 cm (79 in)
Chocolate frogmouth catfish	Chaca bankanensis	20 cm (7.9 in)
Asian banjo catfish	Acrochordonichthys rugosus	11 cm (4.3 in)
Walking catfish	Clarias batrachus	50 cm (19.5 in)	The albino form is common in the aquarium trade. This fish can survive out of the water and "walk" as long as kept wet, for a very long time.^[22]
Black catfish, Narrowfront tandan	Neosilurus ater	47 cm (19 in)
Stinging catfish	Heteropneustes fossilis	30 cm (12 in)
Sun catfish	Horabagrus brachysoma	45 cm (18 in)
Asian redtail catfish	Hemibagrus wyckioides	130 cm (51 in)
Asian upside down catfish	Mystus leucophasis	30 cm (12 in)
Asian bumblebee catfish	Pseudomystus siamensis	15 cm (5.9 in)
Indawgyi stream catfish	Akysis prashadi	6 cm (2.4 in)
Asian stone catfish	Hara jerdoni	4 cm (1.6 in)
Iridescent shark	Pangasianodon hypophthalmus	130 cm (51 in)
Chao Phraya giant shark, giant pangasius	Pangasius sanitwongsei	300 cm (120 in)
Colombian shark catfish	Ariopsis seemanni	35 cm (14 in)
Blue whale catfish	Cetopsis coecutiens	27 cm (11 in)
Banjo catfish	Bunocephalus coracoideus	14 cm (5.5 in)
Giant raphael catfish	Megalodoras uranoscopus	60 cm (24 in)
Ripsaw catfish	Oxydoras niger	90 cm (35 in)
Striped raphael catfish	Platydoras armatulus	43 cm (17 in)
Spotted raphael catfish	Agamyxis pectinifrons	15 cm (5.9 in)
Bottlenose catfish	Ageneiosus inermis	18.5 cm (7.3 in)
Gulper catfish	Asterophysus batrachus	25 cm (9.8 in)
Midnight catfish	Auchenipterichthys coracoideus	10 cm (3.9 in)
Oil catfish	Duringlanis perugiae	5 cm (2.0 in)
Jaguar catfish	Liosomadoras oncinus	17 cm (6.7 in)
	Tatia intermedia	12 cm (4.7 in)
Pygmy driftwood catfish	Trachelyichthys exilis	8 cm (3.1 in)
	Trachelyopterus fisheri	28 cm (11 in)

List_of_freshwater_aquarium_fish_species

List of freshwater aquarium fish species

Catfish

Characoids

Cichlids

Cyprinids

Loaches

Live-bearers

Killifish

Labyrinth fish

Rainbowfish

Gobies and sleepers

Other fish

See also

Sources

References

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Common name	Scientific name	Size	Remarks	Tank size	Temperature range	pH range
Arowana tetra	Gnathocharax steindachneri	5 cm (2.0 in)
Black phantom tetra	Hyphessobrycon megalopterus	3.6 cm (1.4 in)^[23]	The black phantom tetra enjoy being in groups of 6 or more and a slightly shaded tank. Males may claim small territories and occasionally minor battles may occur. The Phantom tetra goes well with other tetras of similar size. They also prefer floating plants.^[24]
Black neon tetra	Hyphessobrycon herbertaxelrodi	3.2 cm (1.3 in)^[25]
Black tetra, skirt tetra	Gymnocorymbus ternetzi	5 cm (2.0 in)	A highly spirited fish that may occasionally chase its own species as well as harass slow moving fish with long fins. This fish is very hardy and can stand a variety of water qualities. Disease is not a big problem with the black tetra. The black tetra is also known as the black skirt tetra. The female black tetra is more robust and larger than the male.^[26]
Black morpho tetra	Poecilocharax weitzmani	4 cm (1.6 in)
Bleeding heart tetra	Hyphessobrycon erythrostigma	6.5 cm (2.6 in)	The bleeding heart tetra is distinguished by the small red spot on both sides of the fish. This fish is very prone to diseases, and can grow larger than most tetra species.^[27]
Bloodfin tetra	Aphyocharax anisitsi	5 cm (2.0 in)
Blue tetra	Knodus borki	5 cm (2.0 in)
Blueberry tetra	Hyphessobrycon wadai	3.5 cm (1.4 in)
	Brittanichthys axelrodi	3 cm (1.2 in)
Bucktooth tetra	Exodon paradoxus	5 cm (2.0 in)
Buenos Aires tetra	Hyphessobrycon anisitsi	7.5 cm (3.0 in)
Cardinal tetra	Paracheirodon axelrodi	5 cm (2.0 in)	Similar to the Neon Tetra, but slightly larger and doesn't prefer to school as much. They need much larger tanks, although their temperament is similar.^[28]
Cave tetra, blind tetra	Astyanax mexicanus	12 cm (4.7 in)	The cave tetra is the blind cave form of the Mexican tetra. This tetra prefers low to moderate lighting.^[29]
Cochu's blue tetra	Boehlkea fredcochui	6 cm (2.4 in)
Colombian tetra	Hyphessobrycon columbianus	6.5 cm (2.6 in)
Diamond tetra	Moenkhausia pittieri	6 cm (2.4 in)
Dawn tetra	Aphyocharax paraguayensis	3.5 cm (1.4 in)
Ember tetra	Hyphessobrycon amandae	2 cm (0.79 in)	Ember tetras have been known to live ten years or more. May become stressed by the presence of larger fish.^[30]	50 liters (13 U.S. gal)^[31]	24–28 °C (75–82 °F)^[31]	5 - 7 pH^[31]
Emperor tetra	Nematobrycon palmeri	5 cm (2.0 in)
Flame tetra	Hyphessobrycon flammeus	2.5 cm (0.98 in)
Flame-back Bleeding heart tetra	Hyphessobrycon pyrrhonotus	4.5 cm (1.8 in)
Garnet tetra, pretty tetra	Hemigrammus pulcher	6.5 cm (2.6 in)
Glass bloodfin tetra	Prionobrama filigera	6 cm (2.4 in)
Glowlight tetra	Hemigrammus erythrozonus	3.75 cm (1.48 in)
Golden pristella tetra	Pristella maxillaris	5 cm (2.0 in)
Green neon tetra	Paracheirodon simulans	2.5 cm (0.98 in)	Similar to Neon Tetras and Cardinal Tetras, they are the same to Neon Tetras beside having a green tiny near their top dorsal fin^[32]
Head and tail light tetra	Hemigrammus ocellifer	4 cm (1.6 in)
Hummingbird tetra	Trochilocharax ornatus	2 cm (0.79 in)
January tetra	Hemigrammus hyanuary	4 cm (1.6 in)
Lemon tetra	Hyphessobrycon pulchripinnis	5 cm (2.0 in)
Neon tetra	Paracheirodon innesi	3.75 cm (1.48 in)	Neon tetras must be kept in groups of at least a half-dozen, as they are a shoaling species. With peaceful dispositions, they are also able to be kept with other species of non-aggressive fish.^[33]	38 L (10 gal)^[33]	68 to 79 F (20 to 26 C)^[33]	6.0–7.0^[34]
Ornate tetra	Hyphessobrycon bentosi	4.5 cm (1.8 in)
Penguin tetra, blackline penguinfish	Thayeria boehlkei	6.5 cm (2.6 in)
Peruvian tetra	Hyphessobrycon peruvianus	4 cm (1.6 in)
Rainbow tetra	Nematobrycon lacortei	4 cm (1.6 in)
Red and Blue Peru tetra	Hyphessobrycon margitae	4 cm (1.6 in)
Red eye tetra	Moenkhausia sanctaefilomenae	4 cm (1.6 in)
Red-line lizard tetra	Iguanodectes geisleri	5.5 cm (2.2 in)
Red phantom tetra	Hyphessobrycon sweglesi	4.5 cm (1.8 in)
Redflank bloodfin	Aphyocharax rathbuni	4.5 cm (1.8 in)
Rosy tetra	Hyphessobrycon rosaceus	4 cm (1.6 in)
Royal tetra	Inpaichthys kerri	3.5 cm (1.4 in)	Possesses an adipose fin allowing it to be differentiated from the Emperor tetra ^[35]
Ruby tetra	Axelrodia riesei	2 cm (0.79 in)
Rummy-nose tetra	Hemigrammus rhodostomus	5 cm (2.0 in)	This common name is used for three different species of schooling fish with similar patterns: Hemigrammus rhodostomus, Hemigrammus bleheri, and Petitella georgiae.
False rummy-nose tetra	Petitella georgiae	5 cm (2.0 in)	This common name is used for three different species of schooling fish with similar patterns: Hemigrammus rhodostomus, Hemigrammus bleheri, and Petitella georgiae.
Splash tetra	Copella arnoldi	5.5 cm (2.2 in)
Spotted splashing tetra	Copella meinkeni	4.5 cm (1.8 in)
	Pyrrhulina spilota	7 cm (2.8 in)
Serpae tetra	Hyphessobrycon serpae	4.5 cm (1.8 in)
Silvertip tetra	Hasemania nana	3 cm (1.2 in)
	Tucanoichthys tucano	2 cm (0.79 in)
X-ray tetra	Pristella maxillaris	4.5 cm (1.8 in)	Also just called the X-ray fish.
Yellow phantom tetra	Hyphessobrycon roseus	2 cm (0.79 in)
African moon tetra	Bathyaethiops caudomaculatus	8 cm (3.1 in)
Congo tetra	Phenacogrammus interruptus	7.5 cm (3.0 in)	Peaceful but may scare shy species with its active swimming and large adult size. Recommended for most community tanks however. Do not keep congo tetras with fin-nipping species as the spectacular fins of the males will be destroyed.^[36]	108 L (28.5 gal)^[36]	73-82 °F (23-28 °C)^[36]	6.0-7.5^[36]
	Phenacogrammus aurantiacus	10 cm (3.9 in)
Jellybean tetra	Ladigesia roloffi	3 cm (1.2 in)
Long-fin tetra	Brycinus longipinnis	12.5 cm (4.9 in)
Niger tetra	Arnoldichthys spilopterus	10 cm (3.9 in)
	Alestopetersius brichardi	8 cm (3.1 in)
Yellow-tailed Congo tetra	Alestopetersius caudalis	6 cm (2.4 in)

Common name	Scientific name	Size	Remarks
Common hatchetfish	Gasteropelecus sternicla	4 cm (1.6 in)	Requires a varied diet including fruit flies^[37]^[38]
Marbled hatchetfish	Carnegiella strigata	5 cm (2.0 in)	Requires a varied diet including fruit flies^[38]^[37]
Black-winged hatchetfish	Carnegiella marthae	4 cm (1.6 in)
Pygmy hatchetfish	Carnegiella myersi	2.2 cm (0.87 in)

Common name	Scientific name	Size
Golden pencilfish	Nannostomus beckfordi	6 cm (2.4 in)
Hockeystick pencilfish	Nannostomus eques	3.5 cm (1.4 in)
Barred pencilfish	Nannostomus espei	3 cm (1.2 in)
Dwarf pencilfish	Nannostomus marginatus	2.5 cm (0.98 in)
Coral-red pencilfish	Nannostomus mortenthaleri	3 cm (1.2 in)
	Nannostomus nigrotaeniatus	3 cm (1.2 in)
Three-lined pencilfish	Nannostomus trifasciatus	3 cm (1.2 in)
One-lined Pencilfish	Nannostomus unifasciatus	4 cm (1.6 in)

Common name	Scientific name	Size	Remarks	Temperature range	pH range
Silver dollar	Metynnis argenteus	15 cm (5.9 in)	The name "silver dollar" may also refer to Metynnis hypsauchen, Metynnis maculatus, or other related fishes.
Schreitmuller's metynnis	Metynnis hypsauchen	14 cm (5.5 in)
Spotted silver dollar	Metynnis lippincottianus	13 cm (5.1 in)
Red-bellied pacu	Colossoma bidens	120 cm (47 in)		78–82 °F (26–28 °C)
Red piranha	Pygocentrus nattereri	33 cm (13 in)
Redeye piranha, black piranha	Serrasalmus rhombeus	41.5 cm (16.3 in)
Wimple piranha	Catoprion mento	15 cm (5.9 in)
	Mylossoma aureum	30 cm (12 in)
Disk tetra	Myleus schomburgkii	40 cm (16 in)		23 °C to 27 °C	5.0–7.0

Common name	Scientific name	Size
African pike characin	Hepsetus odoe	44 cm (17 in)
Goliath tigerfish	Hydrocynus goliath	133 cm (52 in)
Spotted pike-characin	Boulengerella maculata	32 cm (13 in)
Hujeta gar	Ctenolucius hujeta	25 cm (9.8 in)
Slender hemiodus	Hemiodus gracilis	16 cm (6.3 in)
Kissing prochilodus, flagtail Prochilodus	Semaprochilodus insignis	27.5 cm (10.8 in)
Marbled headstander	Abramites hypselonotus	14 cm (5.5 in)^[39]
Banded leporinus	Leporinus fasciatus	27 cm (11 in)
Striped headstander	Anostomus anostomus	16 cm (6.3 in)
	Synaptolaemus latofasciatus	11 cm (4.3 in)
Siver distichodus	Distichodus affinis	20 cm (7.9 in)
Six-banded distichodus	Distichodus sexfasciatus	75 cm (30 in)
	Neolebias ansorgii	3.5 cm (1.4 in)
Payara	Hydrolycus scomberoides	117 cm (46 in)
Pink-tail chalceus	Chalceus macrolepidotus	25 cm (9.8 in)
Red wolf fish	Erythrinus erythrinus	20 cm (7.9 in)
Red tail barracuda	Acestrorhynchus falcatus	30 cm (12 in)
Spotted headstander	Chilodus punctatus	8 cm (3.1 in)

Common name	Scientific name	Size
Sunshine peacock cichlid	Aulonocara baenschi	13 cm (5.1 in)
Red shoulder peacock	Aulonocara hansbaenschi	8.5 cm (3.3 in)
Eureka red peacock	Aulonocara jacobfreibergi	15 cm (5.9 in)
Aulonocara chizumulu	Aulonocara korneliae	8 cm (3.1 in)
Pale Usisya aulonocara	Aulonocara steveni	9 cm (3.5 in)
Flavescent peacock	Aulonocara stuartgranti	12 cm (4.7 in)
Spilo	Champsochromis spilorhynchus	40 cm (16 in)
	Copadichromis azureus	14.5 cm (5.7 in)
Red fin hap	Copadichromis borleyi	14 cm (5.5 in)
Blue dolphin cichlid, lumphead cichlid	Cyrtocara moorii	25 cm (9.8 in)
Afra cichlid, dogtooth cichild	Cynotilapia afra	10 cm (3.9 in)
Malawi eyebiter	Dimidiochromis compressiceps	23 cm (9.1 in)
Rusty cichlid, lavender cichild	Iodotropheus sprengerae	10 cm (3.9 in)
Electric yellow cichlid	Labidochromis caeruleus	20 cm (7.9 in)
Fuelleborn's cichlid, Blue mbuna	Labeotropheus fuelleborni	18 cm (7.1 in)
Scrapermouth mbuna	Labeotropheus trewavasae	12 cm (4.7 in)
Hongi, Red-top kimpumpa	Labidochromis sp. "Hongi"	13 cm (5.1 in)
Yellow Top Mbamba	Labidochromis sp. "Mbamba Bay"	13 cm (5.1 in)
Aurora	Maylandia aurora	9 cm (3.5 in)
Cobalt blue cichlid, cobalt zebra cichlid	Maylandia callainos	10 cm (3.9 in)
Red zebra cichlid	Maylandia estherae	8 cm (3.1 in)
Kenyi cichlid	Maylandia lombardoi	13 cm (5.1 in)
Zebra mbuna	Maylandia zebra	11 cm (4.3 in)
Auratus cichlid, Malawi golden cichlid	Melanochromis auratus	10 cm (3.9 in)
Chipokee cichlid	Melanochromis chipokae	12 cm (4.7 in)
Blue johanni cichlid, Maingano	Melanochromis cyaneorhabdos	10 cm (3.9 in)
Pearl of Likoma	Melanochromis joanjohnsonae	10 cm (3.9 in)
Fusco	Nimbochromis fuscotaeniatus	25 cm (9.8 in)
Livingston's cichlid	Nimbochromis livingstonii	25 cm (9.8 in)
Kaligono	Nimbochromis polystigma	30 cm (12 in)
Venustus cichlid, giraffe cichild	Nimbochromis venustus	25 cm (9.8 in)
Deep-water hap	Placidochromis electra	12 cm (4.7 in)
Fenestratus	Protomelas fenestratus	14 cm (5.5 in)
Red empress cichlid	Protomelas taeniolatus	15 cm (5.9 in)
Yellow-tail acei	Pseudotropheus acei	10 cm (3.9 in)
Bumblebee cichlid, hornet cichlid	Pseudotropheus crabro	15 cm (5.9 in)
Dwarf Mbuna	Pseudotropheus demasoni	10 cm (3.9 in)
Johanni cichlid	Pseudotropheus johannii	10 cm (3.9 in)
Saulosi	Pseudotropheus saulosi	7.5 cm (3.0 in)
Pindani	Chindongo socolofi	7 cm (2.8 in)
Malawi barracuda	Rhamphochromis macrophthalmus	30 cm (12 in)
Electric blue cichlid	Sciaenochromis fryeri	11.5 cm (4.5 in)
Big-mouth hap	Tyrannochromis macrostoma	38 cm (15 in)

Common name	Scientific name	Size	Remarks
Calvus	Altolamprologus calvus	14 cm (5.5 in)
Compressiceps	Altolamprologus compressiceps	12 cm (4.7 in)
	Benthochromis tricoti	16.5 cm (6.5 in)
	Boulengerochromis microlepis	90 cm (35 in)
	Callochromis pleurospilus	10 cm (3.9 in)
	Chalinochromis brichardi	12 cm (4.7 in)
	Cyathopharynx furcifer	21 cm (8.3 in)
Frontosa cichild	Cyphotilapia frontosa	40 cm (16 in)
Frontosa cichild	Cyphotilapia gibberosa	40 cm (16 in)
Herring cichlid, sardine cichlid	Cyprichromis leptosoma	11 cm (4.3 in)
Descamp's strange-tooth cichlid	Ectodus descampsii	10.5 cm (4.1 in)
Brown julie	Julidochromis dickfeldi	11 cm (4.3 in)
Marlier's julie	Julidochromis marlieri	15 cm (5.9 in) fem / 10 cm (3.9 in) male
Golden julie	Julidochromis ornatus	8.5 cm (3.3 in)
Convict julie	Julidochromis regani	15 cm (5.9 in) fem / 10 cm (3.9 in) male
Masked julie	Julidochromis transcriptus	10 cm (3.9 in)
	Lamprologus ocellatus	6 cm (2.4 in)
	Lamprologus signatus	5.5 cm (2.2 in)
	Neolamprologus brevis	6 cm (2.4 in)
Lyretail cichlid, fairy cichlid	Neolamprologus brichardi	10 cm (3.9 in)
Lemon cichlid	Neolamprologus leleupi	11.5 cm (4.5 in)
	Neolamprologus multifasciatus	3.8 cm (1.5 in)
	Neolamprologus similis	3.8 cm (1.5 in)	A small shell-dwelling cichlid from Lake Tanganyika. Very similar to N. multifsciatus but similis has striping from the body continue to the head
Five-barred lamprologus	Neolamprologus tretocephalus	15 cm (5.9 in)
Featherfin	Ophthalmotilapia ventralis	15 cm (5.9 in)
	Petrochromis trewavasae	20 cm (7.9 in)
	Simochromis pleurospilus	10 cm (3.9 in)
	Tropheus duboisi	13 cm (5.1 in)
	Tropheus moorii	14 cm (5.5 in)
	Tropheus polli	14 cm (5.5 in)
	Variabilichromis moorii	10 cm (3.9 in)
Yellow sand cichlid	Xenotilapia flavipinnis	9 cm (3.5 in)

Common name	Scientific name	Size
Allauad's haplo	Astatoreochromis alluaudi	19 cm (7.5 in)
	Haplochromis aeneocolor	7.5 cm (3.0 in)
Zebra obliquidens	Haplochromis latifasciatus	11 cm (4.3 in)
Flameback	Haplochromis nyererei	8 cm (3.1 in)
	Haplochromis thereuterion	8 cm (3.1 in)
Hippo Point Salmon	Ptyochromis sp. "Hippo Point Salmon"	14 cm (5.5 in)

Common name	Scientific name	Size
African butterfly cichlid	Anomalochromis thomasi	5 cm (2.0 in)
Dwarf Egyptian mouthbrooder	Pseudocrenilabrus multicolor	8 cm (3.1 in)
Guenther's mouthbrooder	Chromidotilapia guentheri	10 cm (3.9 in)
Jewel cichlid, two-spotted jewel cichlid	Rubricatochromis bimaculatus	14 cm (5.5 in)
Lifalili jewel cichlid, blood-red jewel cichlid	Rubricatochromis lifalili	8 cm (3.1 in)
Ocellated kribensis	Pelvicachromis subocellatus	5 cm (2.0 in)
Rainbow krib	Pelvicachromis pulcher	11 cm (4.3 in)
Striped kribensis	Pelvicachromis taeniatus	7 cm (2.8 in)
Yellow kribensis	Wallaceochromis humilis	12.5 cm (4.9 in)
Lionhead cichlid	Steatocranus casuarius	10 cm (3.9 in)
	Nanochromis parilus	4.5 cm (1.8 in)

Common name	Scientific name	Size	Remarks
Bay snook	Petenia splendida	50 cm (20 in)
Blackbelt cichlid	Vieja maculicauda	25 cm (9.8 in)
Convict cichlid	Amatitlania nigrofasciata	10 cm (3.9 in)
	Amatitlania myrnae	8 cm (3.1 in)
Firemouth cichlid	Thorichthys meeki	17 cm (6.7 in)
Jack Dempsey cichlid	Rocio octofasciata	25 cm (9.8 in)
Jaguar cichlid, managuense cichlid	Parachromis managuensis	55 cm (22 in)
Mayan cichlid	Mayaheros urophthalmus	39.5 cm (15.6 in)
Midas cichlid	Amphilophus citrinellus	24.5 cm (9.6 in)	commonly confused with red devil cichlids, but it is an entirely different species ^[40]
Nicaraguan cichlid, moga	Hypsophrys nicaraguensis	20 cm (7.9 in)
Poor man's tropheus	Neetroplus nematopus	14 cm (5.5 in)
Rainbow cichlid	Herotilapia multispinosa	17 cm (6.7 in)
Red terror, guayas cichlid	Mesoheros festae	25 cm (9.8 in)
Salvin's cichlid	Trichromis salvini	22 cm (8.7 in)
Texas cichlid, Rio Grande cichlid	Herichthys cyanoguttatus	30 cm (12 in)
T-bar cichlid	Amatitlania sajica	9 cm (3.5 in)
Wolf cichlid	Parachromis dovii	72 cm (28 in)
Yellowjacket cichlid	Parachromis friedrichsthalii	28 cm (11 in)
False yellowjacket cichlid	Parachromis motaguensis	30 cm (12 in)

Common name	Scientific name	Size	Remarks	Temperature range	pH range
Blue acara	Andinoacara pulcher	16 cm (6.3 in)
Thread-finned acara	Acarichthys heckelii	19.5 cm (7.7 in)
Angelfish	Pterophyllum scalare	15 cm (5.9 in)	In an enclosed tank habitat, the fish's territorial, aggressive nature is heightened, so don't house angelfish with shy species that are intimidated by pushy, boisterous fish.^[41]	75–82 °F (25–28 °C)^[41]	6.8 – 7^[41]
Altum angelfish	Pterophyllum altum	18 cm (7.1 in)
Spotted angelfish	Pterophyllum leopoldi	10 cm (3.9 in)
Chocolate cichlid	Hypselecara temporalis	15 cm (5.9 in)
Common discus, red discus	Symphysodon discus	12 cm (4.7 in)
Blue discus, green discus	Symphysodon aequifasciatus	14 cm (5.5 in)
Eartheater cichlid	Geophagus altifrons	26.5 cm (10.4 in)
Demon eartheater	Satanoperca jurupari	17 cm (6.7 in)
Threespot eartheater	Satanoperca daemon	20 cm (7.9 in)
Flag cichlid	Mesonauta festivus	12 cm (4.7 in)
Greenstreaked eartheater, cupid cichlid	Biotodoma cupido	12 cm (4.7 in)
Green terror	Andinoacara rivulatus	20 cm (7.9 in)
Oscar	Astronotus ocellatus	45 cm (18 in)	Many people that purchase these fish do not realize that the fish could grow to a foot long (30 cm) within a year. Due to their fast growth rate and large size as an adult, they are often kept in aquariums that are too small for them.^[42]	72-80 °F (22-27 °C)^[42]	6.0-7.5^[42]
Butterfly peacock bass	Cichla ocellaris	74 cm (29 in)
Orinoco peacock bass	Cichla orinocensis	62 cm (24 in)
Speckled peacock bass, speckled pavon	Cichla temensis	100 cm (39 in)
Pearl cichlid	Geophagus brasiliensis	28 cm (11 in)
Severum	Heros efasciatus	17 cm (6.7 in)
Uaru, waroo	Uaru amphiacanthoides	25 cm (9.8 in)	Also known as the Triangle Cichlid.
Zebra Pike Cichlid	Crenicichla zebrina	26.5 cm (10.4 in)

Common name	Scientific name	Size	Remarks	Temperature range	pH range
African banded barb	Enteromius fasciolatus	6 cm (2.4 in)
African butterfly barb	Enteromius hulstaerti	3.5 cm (1.4 in)
Jae barb	Enteromius jae	4 cm (1.6 in)
Arulius barb	Dawkinsia arulius	12 cm (4.7 in)		66 °F to 77 °F (19°-25 °C)	6 – 8
Bigspot barb, Duncker's barb	Barbodes dunckeri	13 cm (5.1 in)		72 - 85 °F (22 - 29 °C)	6 - 7
Black ruby barb	Pethia nigrofasciatus	6.5 cm (2.6 in)
Cherry barb	Puntius titteya	4.8 cm (1.9 in)
Denison's barb, red line torpedo barb	Sahyadria denisonii	15 cm (5.9 in)
Drape fin barb	Oreichthys crenuchoides	4.5 cm (1.8 in)
Gold barb	Barbodes semifasciolatus	8 cm (3.1 in)
Golden barb	Pethia gelius	5 cm (2.0 in)
Odessa barb	Pethia padamya	8 cm (3.1 in)
Melon barb	Haludaria fasciata	15 cm (5.9 in)
Mascara Barb	Dawkinsia assimilis	12 cm (4.7 in)		66 °F to 77 °F (19°-25 °C)	6 – 8
	Dawkinsia rohani	12 cm (4.7 in)		66 °F to 77 °F (19°-25 °C)	6 – 8
	Dawkinsia tambraparniei	12 cm (4.7 in)		66 °F to 77 °F (19°-25 °C)	6 – 8
Narayan barb	Pethia setnai	6 cm (2.4 in)
Rosy barb	Pethia conchonius	13 cm (5.1 in)
Sawbwa barb	Sawbwa resplendens	3 cm (1.2 in)
Tic-tac-toe barb	Pethia stoliczkana	5 cm (2.0 in)
Tiger barb, sumatra barb	Puntigrus tetrazona	7.5 cm (3.0 in)	Keep in shoals of 8 or 10 to prevent aggression^[45]
Spanner barb, t-barb	Barbodes lateristriga	20 cm (7.9 in)
Fiveband barb, pentazona barb	Desmopuntius hexazona	5 cm (2.0 in)
Snakeskin barb	Desmopuntius rhomboocellatus	5 cm (2.0 in)
Checker barb	Oliotius oligolepis	5 cm (2.0 in)

Common name	Scientific name	Size	Remarks
Tinfoil barb	Barbonymus schwanenfeldii	36 cm (14 in)
Giant sword minnow	Macrochirichthys macrochirus	100 cm (39 in)
Hampala barb	Hampala macrolepidota	70 cm (28 in)
Mad barb	Leptobarbus hoevenii	100 cm (39 in)
Bala shark	Balantiocheilus melanopterus	40 cm (16 in)	Grows large, needs lots of swimming room and is a schooling fish so a 125 gallon would be good for 3-4^[46]
Black shark	Labeo chrysophekadion	90 cm (35 in)
Apollo Shark	Luciosoma setigerum	22 cm (8.7 in)
Siamese algae eater, fringe barb	Crossocheilus langei	16 cm (6.3 in)	Many other fish in the order Cypriniformes are also sold under this name. Very likely to jump out of the aquarium especially after reaching adult size. Very useful for getting rid of algae when it is young but prefer fish food upon reaching adulthood.^[47]
	Cyclocheilichthys janthochir	20 cm (7.9 in)
Flying fox (fish)	Epalzeorhynchos kalopterus	16 cm (6.3 in)
Red-tailed black shark	Epalzeorhynchos bicolor	13 cm (5.1 in)
Rainbow shark	Epalzeorhynchos frenatum	15 cm (5.9 in)
Cambodian log sucker, false Siamese algae eater	Ceratogarra cambodgiensis	24 cm (9.4 in)
Jullien's golden carp	Probarbus jullieni	150 cm (59 in)
Panda garra	Garra flavatra	6 cm (2.4 in)
Chinese algae eater	Gyrinocheilus aymonieri	28 cm (11 in)	This species may be sold under a variety of common names, including Siamese algae eater, Chinese algae eater, golden algae eater, or sucking loach. A gold colored form also exists.

Common name	Scientific name	Size	Remarks	Tank size	Temperature range	pH range
Agassiz's dwarf cichlid	Apistogramma agassizii	4 cm (1.6 in)
Umbrella cichlid	Apistogramma borellii	4 cm (1.6 in)
Cockatoo cichlid	Apistogramma cacatuoides	5 cm (2.0 in)
	Apistogramma nijsseni	4 cm (1.6 in)
Three-striped dwarf ichlid	Apistogramma trifasciata	4 cm (1.6 in)
Two-striped dwarf cichlid, banded dwarf cichlid	Apistogramma bitaeniata	7.5 cm (3.0 in)
Keyhole cichlid	Cleithracara maronii	7 cm (2.8 in)
Lyretail checkerboard cichlid, chessboard cichlid	Dicrossus filamentosus	4 cm (1.6 in)
Zebra acara	Ivanacara adoketa	5 cm (2.0 in)
Dwarf flag cichlid	Laetacara curviceps	4.5 cm (1.8 in)
Blue ram, German ram, ram cichlid	Mikrogeophagus ramirezi	3.5 cm (1.4 in) ^[43]	These small and colorful fish require precise water parameters, and if you don't meet those parameters, your fish could be severely impacted.^[43]	10 U.S. gal (38 L)^[43]	78 - 85 F (25.5 - 29.4 C)^[43]	6.0 – 7.5^[43]
Bolivian ram	Mikrogeophagus altispinosus	5.5 cm (2.2 in)
Goldeneye cichlid	Nannacara anomala	6 cm (2.4 in)

Common name	Scientific name	Size	Remarks
Canara pearlspot	Etroplus canarensis	11.5 cm (4.5 in)
Green chromide	Etroplus suratensis	40 cm (16 in)
Orange chromide	Pseudetroplus maculatus	9.5 cm (3.7 in)
Pinstripe damba	Paretroplus menarambo	17 cm (6.7 in)
Blood parrot cichlid	(Amphilophus citrinellus × Vieja melanurus)		Not considered a separate species of cichlid but a hybrid.^[44]
Flowerhorn cichlid	Cichlasoma sp.	25 cm (9.8 in)	Not considered a separate species of cichlid but a hybrid.^[44]

Common name	Scientific name	Size	Tank size	Tank size	Temperature range	pH range
Harlequin rasbora	Trigonostigma heteromorpha	5 cm (2.0 in)	Also known as Harlequin tetra or Harlequin barb.
Glowlight rasbora	Trigonostigma hengeli	5 cm (2.0 in)
Red-striped rasbora	Trigonopoma pauciperforata	7.5 cm (3.0 in)			22–29 °C (72–84 °F)
	Trigonopoma gracile	5.5 cm (2.2 in)			22–29 °C (72–84 °F)
Chili rasbora	Boraras brigittae	2 cm (0.79 in)	Should be kept in acidic water which can be difficult to maintain for most beginners in the aquarium hobby.^[48]	5 U.S. gallons (19 L)^[48]	20–28 °C (68–82 °F)^[48]	5-6^[48]
Dwarf rasbora	Boraras maculatus	2.5 cm (0.98 in)
Phoenix rasbora	Boraras merah	2 cm (0.79 in)
Eyespot rasbora	Brevibora dorsiocellata	3.5 cm (1.4 in)
	Kottelatia brittani	6 cm (2.4 in)
	Rasbora cephalotaenia	13 cm (5.1 in)
Brilliant rasbora	Rasbora einthovenii	9 cm (3.5 in)
Clown rasbora	Rasbora kalochroma	10 cm (3.9 in)
	Rasbora patrickyapi	6 cm (2.4 in)
Scissortail rasbora	Rasbora trilineata	15 cm (5.9 in)
Volcano rasbora	Rasbora vulcanus	5 cm (2.0 in)
	Microdevario kubotai	2 cm (0.79 in)
Blackline rasbora, red-tailed rasbora	Rasbora borapetensis	10 cm (3.9 in)
Espei rasbora	Trigonostigma espei	5 cm (2.0 in)
Fire rasbora	Rasboroides vaterifloris	4 cm (1.6 in)
Least rasbora	Boraras urophthalmoides	1.6 cm (0.63 in)

Common name	Scientific name	Size	Remarks
	Sundadanio axelrodi	2 cm (0.79 in)
Pearl danio	Danio albolineatus	6.5 cm (2.6 in)	subspecies:blue-redstripe danio, Kedah danio
Barred danio	Devario pathirana	6 cm (2.4 in)
Celestial Pearl danio	Danio margaritatus	2 cm (0.79 in)
Emerald dwarf danio	Danio erythromicron	2 cm (0.79 in)
Fireline devario	Devario sondhii	4.5 cm (1.8 in)
Giant danio	Devario aequipinnatus	15 cm (5.9 in)
	Devario auropurpureus	8 cm (3.1 in)
Glowlight danio	Danio choprae	4 cm (1.6 in)
Gold-ring danio	Danio tinwini	2 cm (0.79 in)
Malabar danio	Devario malabaricus	11.5–14 cm (4.5–5.5 in)
Ocelot danio	Danio kyathit	6 cm (2.4 in)
Spotted danio	Danio nigrofasciatus	4 cm (1.6 in)
Turquoise danio	Danio kerri	5 cm (2.0 in)
Zebra danio	Danio rerio	5 cm (2.0 in)
	Barilius ardens	10 cm (3.9 in)
	Opsarius pulchellus	11 cm (4.3 in)

Common name	Scientific name	Size	Remarks	Temperature range	pH range
Goldfish	Carassius auratus	15+ cm (6+ in)	variations: Black Moor, Bubble Eye, Butterfly Tail, Calico, Celestial Eye, Comet, Common, Fantail, Lionchu, Lionhead, Oranda, Panda Moor, Pearlscale, Pompom, Ranchu, Ryukin, Shubunkin, Telescope eye, Veiltail.
Koi, common carp	Cyprinus carpio	30+ cm (12+ in)
Bitterling	Rhodeus amarus	10 cm (4 in)
White Cloud Mountain minnow	Tanichthys albonubes	3.8 cm (1.5 in)
Red shiner	Cyprinella lutrensis	5–9 cm (2.0–3.5 in)
Common dace	Leuciscus leuciscus	40 cm (16 in)		39 to 72 °F (4 to 22 °C)	6.0 to 8.0
Rosy red minnow, fathead minnow	Pimephales promelas	5–7.5 cm (2.0–3.0 in)		10–21 °C (50–70 °F)	7.0 - 7.5
Rainbow shiner	Notropis chrosomus
European minnow	Phoxinus phoxinus
Southern redbelly dace	Phoxinus erythrogaster	7.5–10 cm (3.0–3.9 in)
Tench	Tinca tinca
Golden orfe	Leuciscus idus
Chinese high fin banded shark	Myxocyprinus asiaticus	60 cm (24 in)

Common name	Scientific name	Size	Remarks	Tank size	Temperature range	pH range
Borneo hillstream loach	Gastromyzon ctenocephalus	4.5 cm (1.8 in)	Eats mainly algae. High oxygen level and water quality are greatly appreciated in addition to a strong current (but not needed as many sources claim)^[49]	10 U.S. gal (38 L)^[50]	18–25 °C (64–77 °F)^[50]	6.5 – 8.0 pH^[50]
Borneo hillstream loach	Gastromyzon zebrinus	6 cm (2.4 in)	See above^[49]	10 U.S. gal (38 L)^[50]	18–25 °C (64–77 °F)^[50]	6.5 – 8.0 pH^[50]
Clown loach	Chromobotia macracanthus	30.5 cm (12.0 in)
Green tiger loach	Syncrossus hymenophysa	21 cm (8.3 in)
Fire-eyed loach	Barbucca diabolica	2.5 cm (0.98 in)
Fork-tailed loach	Vaillantella maassi	12.5 cm (4.9 in)
Horseface loach	Acantopsis dialuzona	20 cm (7.9 in)
	Pangio anguillaris	12 cm (4.7 in)
	Pangio cuneovirgata	6 cm (2.4 in)
Java loach	Pangio oblonga	8 cm (3.1 in)				6.2 to 7.0
	Pangio shelfordii	8 cm (3.1 in)
Kuhli loach, coolie loach	Pangio semicincta	10 cm (3.9 in)	The natural habitat of the kuhli loach is the sandy beds of slow-moving rivers and clean mountain streams. They are a social fish and are typically found in small clusters (they are not schooling fish but enjoy the company of their species), but are cautious and nocturnal by nature and swim near the bottom where they feed around obstacles. Kuhli loaches are scavengers, so they will eat anything that reaches the bottom.^{[citation needed]}		75–86 °F (24–30 °C)	5.5 – 6.5
Saddle-back Loach	Homaloptera orthogoniata	13 cm (5.1 in)	The Saddleback Loach will thrive in an aquarium with a good amount of water flow and aeration, considerable amounts of hiding places formed by rocks or driftwood and smooth pebbles and stones to graze on.^[51]		68 - 78 F (20 - 25.6 C)^[51]	6 - 7.5^[51]
Dwarf botia	Ambastaia sidthimunki	5.5 cm (2.2 in)	Formerly named Botia sidthimunki.
Bengal loach	Botia dario	15 cm (5.9 in)	Also known as the Queen loach.
	Botia histrionica	12 cm (4.7 in)
Gangetic loach	Botia rostrata	25 cm (9.8 in)
Polka-Dot Loach	Botia kubotai	12 cm (4.7 in)
Yoyo loach	Botia almorhae	15 cm (5.9 in)
Zebra loach	Botia striata	9 cm (3.5 in)
Redtail loach	Yasuhikotakia modesta	25 cm (9.8 in)
Skunk loach	Yasuhikotakia morleti	10 cm (3.9 in)	Formerly named Botia morleti
	Yasuhikotakia splendida	10 cm (3.9 in)
Banded tiger loach	Syncrossus helodes	30 cm (12 in)
Redfin tiger loach	Syncrossus berdmorei	15 cm (5.9 in)
Golden zebra loach	Sinibotia pulchra	10 cm (3.9 in)
Imperial flower loach	Leptobotia elongata	50 cm (20 in)
Butterfly hillstream loach	Beaufortia kweichowensis	8 cm (3.1 in)	Eats mainly algae. High oxygen level and water quality are greatly appreciated in addition to a strong current (but not needed as many sources claim)^[49]
Panda loach	Yaoshania pachychilus	6 cm (2.4 in)
Tiger hillstream loach	Sewellia lineolata	6 cm (2.4 in)	Eats mainly algae. High oxygen level and water quality are greatly appreciated in addition to a strong current (but not needed as many sources claim)^[49]
Rosy loach	Physoschistura mango	3 cm (1.2 in)
Sumo loach	Schistura balteata	8 cm (3.1 in)
Zodiac loach	Mesonoemacheilus triangularis	6 cm (2.4 in)
	Serpenticobitis octozona	5.5 cm (2.2 in)
Weather Loach^[52]	Misgurnus anguillicaudatus^[53]	30 centimetres (12 in)	Sensitive to changes in barometric pressure^[54]

Common name	Scientific name	Size	Remarks	Temperature range	pH range
Guppy	Poecilia reticulata	5 cm (2.0 in)	Many color and tail pattern varieties exist. They generally need a ratio of 1 male to 2 females or more. All guppies and mollies are hardy fish that tolerate lower oxygen levels and temperatures than most aquarium fish, give birth to live young, and readily breed in home tanks.^[55] can live in full sea water^[56]	66 °F - 84 °F (19 °C - 29 °C)	7 - 8
Endler's livebearer	Poecilia wingei	3.8 cm (1.5 in)
Black molly	Poecilia sphenops	10 cm (3.9 in)	Can live in full sea water^[56]
Sailfin molly	Poecilia latipinna	10 cm (3.9 in)	Gold and silver varieties commonly found; also thrive in brackish water/ full sea water^[56]
Yucatan molly, giant sailfin molly	Poecilia velifera	15 cm (5.9 in)
Dalmatian molly	hybrid	5 cm (2.0 in)	The dalmatian molly is a hybrid color variation that can be generated by crossing some species of Poecilia, like P. sphenops and P. latipinna. The variety "Dalmatian" is spotted alike to a Dalmatian dog. Can live in full sea water^[56]
Lyretail Molly	hybrid	5 cm (2.0 in)	Lyretail Mollies are available in all of these species, can be cross bred with any species of Molly. Can live in full sea water^[56]

Common name	Scientific name	Size
Southern platy	Xiphophorus maculatus	6 cm (2.4 in)
Variable platy	Xiphophorus variatus	6 cm (2.4 in)
Green swordtail	Xiphophorus hellerii	14 cm (5.5 in)
Montezuma swordtail	Xiphophorus montezumae	5.5 cm (2.2 in)

Common name	Scientific name	Size	Remarks	Temperature range	pH range
Largescale four-eyed fish	Anableps anableps	30 cm (12 in)
Pike topminnow	Belonesox belizanus	6 cm (2.4 in)
Redtail splitfin	Xenotoca eiseni	6 cm (2.4 in)
Cuban lima	Limia vittata	8 cm (3.1 in)
Knife livebearer	Alfaro cultratus	7.5 cm (3.0 in)
Least killifish	Heterandria formosa	3.5 cm (1.4 in)
Metallic livebearer	Girardinus metallicus	5 cm (2.0 in)
Dwarf merry widow	Phallichthys tico	2.5 cm (0.98 in)
Tanganyika killifish	Lamprichthys tanganicanus	15 cm (5.9 in)
Norman's lampeye	Poropanchax normani	4.5 cm (1.8 in)
Large finned lampeye	Procatopus nototaenia	6 cm (2.4 in)
Variable lampeye	Procatopus similis	6 cm (2.4 in)
Celebes halfbeak	Nomorhamphus liemi	8 cm (3.1 in)
Wrestling halfbeak	Dermogenys pusilla	7.5 cm (3.0 in)^[57]	Wrestling Halfbeaks are best kept in groups, composed of either a single male with several females, or, in more spacious quarters with ample visual barriers, larger mixed groups containing at least six males.	75-82 F (24-28 C) ^[57]	7 - 8^[57]
Forest halfbeak	Hemirhamphodon pogonognathus	10 cm (3.9 in)
	Hemirhamphodon tengah	3.5 cm (1.4 in)

Common name	Scientific name	Size	Tank size	Temperature range	pH range
Broken-line killifish	Aphyosemion ogoense	5 cm (2.0 in)
Gabon killifish	Aphyosemion gabunense	5 cm (2.0 in)
Gabon jewelfish	Aphyosemion cyanostictum	6.5 cm (2.6 in)
Lyretail panchax	Aphyosemion australe	6 cm (2.4 in)
Red-striped killifish	Aphyosemion striatum	6 cm (2.4 in)
Two-striped killifish	Aphyosemion bitaeniatum	5 cm (2.0 in)
Twostripe lyretail	Aphyosemion bivittatum	5 cm (2.0 in)
Blue lyretail	Fundulopanchax gardneri	5 cm (2.0 in)
Blue gularis	Fundulopanchax sjostedti	13 cm (5.1 in)
	Fundulopanchax scheeli	6 cm (2.4 in)
Clown Killifish, rocket killifish	Epiplatys annulatus	3.5 cm (1.4 in)	50 L (13 U.S. gal)	25–27 °C (77–81 °F)	6 - 7 pH
Redchin panchax	Epiplatys dageti	6 cm (2.4 in)
Bluefin Notho, Rachow's Notho, Rainbow Notho	Nothobranchius rachovii	6 cm (2.4 in)
Redtail notho	Nothobranchius guentheri	3.5 cm (1.4 in)
	Nothobranchius eggersi	5 cm (2.0 in)
	Nothobranchius korthausae	5 cm (2.0 in)
	Nothobranchius palmqvisti	5 cm (2.0 in)

Common name	Scientific name	Size	Remarks
Blue panchax	Aplocheilus armatus	9 cm (3.5 in)
Ceylon killifish	Aplocheilus dayi	9 cm (3.5 in)
Striped panchax, Golden Wonder	Aplocheilus lineatus	10 cm (3.9 in)
Madagascar panchax	Pachypanchax sakaramyi	9 cm (3.5 in)
Playfair's panchax	Pachypanchax playfairii	10 cm (3.9 in)
Powder-blue Panchax	Pachypanchax omalonotus	9 cm (3.5 in)
American flagfish	Jordanella floridae	6 cm (2.4 in)	Native to SE United States
Arabian toothcarp	Aphaniops dispar	7 cm (2.8 in)
Argentine pearl	Austrolebias nigripinnis	7 cm (2.8 in)
	Laimosemion xiphidius	5.5 cm (2.2 in)
Lyrefin pearlfish	Simpsonichthys boitonei	4.5 cm (1.8 in)
Saberfin killie	Terranatos dolichopterus	4 cm (1.6 in)
Medaka	Oryzias latipes	4 cm (1.6 in)
Javanese ricefish	Oryzias javanicus	3.5 cm (1.4 in)
Daisy's Ricefish	Oryzias woworae	2.5–3 cm (0.98–1.18 in)

Common name	Scientific name	Size	Remarks	Tank size	Temperature range	pH range
Ceylonese combtail	Belontia signata	18 cm (7.1 in)
Siamese fighting fish (sometimes Betta, esp. US)	Betta splendens	7.5 cm (3.0 in)	Betta is the name of the genus that includes more than 60 species other than the Siamese fighting fish.	5 gal ^[58]	72–82 °F (22–28 °C)^[58]	6.5-7.5^[58]
Emerald betta	Betta smaragdina	7 cm (2.8 in)
Spotfin betta	Betta macrostoma	10 cm (3.9 in)
Frail gourami	Ctenops nobilis	4 cm (1.6 in)
Black paradisefish	Macropodus spechti	8 cm (3.1 in)
Paradise fish	Macropodus opercularis	7.5 cm (3.0 in)
Round tail paradisefish	Macropodus ocellatus	8.5 cm (3.3 in)
Ornate paradisefish	Malpulutta kretseri	4 cm (1.6 in)
Eyespot gourami	Parasphaerichthys ocellatus	5 cm (2.0 in)
Brown Spike-tailed paradisefish	Pseudosphromenus dayi	4 cm (1.6 in)
Honey gourami	Trichogaster chuna	5.5 cm (2.2 in)
Dwarf gourami	Trichogaster lalius	5 cm (2.0 in)	Suitable for small to mid-sized aquariums but cannot compete with more aggressive fish and males kept together may fight. Several color varieties available. Massive inbreeding has led to high rates of Dwarf gourami iridovirus (DGIV) in pet store fish.^[59]		72 – 82 °F (22 – 27 °C) ^[60]	6 - 7.5^[60]
Thick-lipped gourami	Trichogaster labiosa	9 cm (3.5 in)
Moonlight gourami	Trichopodus microlepis	15 cm (5.9 in)
Snakeskin gourami	Trichopodus pectoralis	20 cm (7.9 in)
Pygmy gourami, Sparkling gourami	Trichopsis pumila	3.8 cm (1.5 in)
Malay combtail	Belontia hasselti	20 cm (7.9 in)
	Betta albimarginata	3 cm (1.2 in)
	Betta brownorum	3 cm (1.2 in)
	Betta burdigala	3.5 cm (1.4 in)
	Betta channoides	3 cm (1.2 in)
Scarlet betta	Betta coccina	4 cm (1.6 in)
	Betta foerschi	5 cm (2.0 in)
	Betta hendra	4 cm (1.6 in)
Crescent betta	Betta imbellis	6 cm (2.4 in)
	Betta mandor	5 cm (2.0 in)
	Betta miniopinna	3.5 cm (1.4 in)
	Betta persephone	3.5 cm (1.4 in)
Toba betta	Betta rubra	4 cm (1.6 in)
	Betta rutilans	3.5 cm (1.4 in)
	Betta uberis	3.5 cm (1.4 in)
Giant pikehead	Luciocephalus pulcher	20 cm (7.9 in)
Peppermint pikehead	Luciocephalus aura	10 cm (3.9 in)
	Parosphromenus anjunganensis	3 cm (1.2 in)
	Parosphromenus bintan	3 cm (1.2 in)
	Parosphromenus deissneri	3 cm (1.2 in)
	Parosphromenus filamentosus	3 cm (1.2 in)
	Parosphromenus linkei	3 cm (1.2 in)
	Parosphromenus opallios	3 cm (1.2 in)
	Parosphromenus ornaticauda	3 cm (1.2 in)
	Parosphromenus phoenicurus	3 cm (1.2 in)
	Parosphromenus quindecim	3 cm (1.2 in)
Chocolate gourami	Sphaerichthys osphromenoides	6 cm (2.4 in)
Crossband chocolate gourami	Sphaerichthys selatanensis	4 cm (1.6 in)
Samurai gourami	Sphaerichthys vaillanti	4 cm (1.6 in)
Pearl gourami	Trichopodus leerii	11.5 cm (4.5 in)
Three spot gourami	Trichopodus trichopterus	10 cm (3.9 in)
Croaking gourami	Trichopsis vittata	6.5 cm (2.6 in)
Giant gourami	Osphronemus goramy	60 cm (24 in)

Common name	Scientific name	Size	Remarks
Kissing gourami	Helostoma temminckii	15 cm (5.9 in)
Climbing perch	Anabas testudineus	20 cm (7.9 in)
Leopard bush fish	Ctenopoma acutirostre	15 cm (5.9 in)
Mottled ctenopoma	Ctenopoma weeksii	12 cm (4.7 in)
Tailspot ctenopoma	Ctenopoma kingsleyae	20 cm (7.9 in)
Ornate ctenopoma	Microctenopoma ansorgii	5 cm (2.0 in)
Blue badis	Badis badis	7 cm (2.8 in)
Scarlet badis	Dario dario	1.5 cm (0.59 in)
Black tiger dario	Dario tigris	2.5 cm (0.98 in)
Bornean leaffish	Nandus nebulosus	12 cm (4.7 in)
Malayan leaffish	Pristolepis fasciata	20 cm (7.9 in)
Forest snakehead	Channa lucius	40 cm (16 in)	Illegal to possess live in the USA without a permit^[61]
Dwarf snakehead	Channa gachua	20 cm (7.9 in)	Illegal to possess live in the USA without a permit^[61]
Emperor snakehead	Channa marulioides	65 cm (26 in)	Illegal to possess live in the USA without a permit^[61]
Giant snakehead	Channa micropeltes	130 cm (51 in)	Illegal to possess live in the USA without a permit^[61]
Ocellated snakehead	Channa pleurophthalma	35 cm (14 in)	Illegal to possess live in the USA without a permit^[61]
Orange-spotted snakehead	Channa aurantimaculata	36 cm (14 in)
Barca snakehead	Channa barca	105 cm (41 in)
Rainbow snakehead	Channa bleheri	14.5 cm (5.7 in)
African snakehead	Parachanna obscura	50 cm (20 in)	Illegal to possess live in the USA without a permit^[61]

Common name	Scientific name	Size	Remarks	Temperature range	pH range
Bleher's rainbowfish	Chilatherina bleheri	12 cm (4.7 in)
Red rainbowfish	Glossolepis incisus	9–13 cm (3.5–5.1 in)	Almost all rainbowfish species are bred in captivity and wild populations may be protected.^[62]
Threadfin rainbowfish	Iriatherina werneri	3–4 cm (1.2–1.6 in)
New Guinea rainbowfish	Melanotaenia affinis	13 cm (5.1 in)
Boeseman's rainbowfish	Melanotaenia boesemani	10–13 cm (3.9–5.1 in)
Lake Kurumoi rainbowfish	Melanotaenia parva	7.5–8 cm (3.0–3.1 in)
Neon rainbowfish	Melanotaenia praecox	6–7.5 cm (2.4–3.0 in)
Lake Wanam rainbowfish	Glossolepis wanamensis	9 cm (3.5 in)
Western rainbowfish	Melanotaenia australis	11 cm (4.3 in)
Duboulayi's rainbowfish	Melanotaenia duboulayi	13–15 cm (5.1–5.9 in)	a.k.a. Crimson-Spotted rainbowfish
Australian rainbowfish	Melanotaenia fluviatilis	13–15 cm (5.1–5.9 in)
Lake Tebera rainbowfish	Melanotaenia herbertaxelrodi	9 cm (3.5 in)
Lake Kutubu rainbowfish	Melanotaenia lacustris	12 cm (4.7 in)
Parkinson's rainbowfish	Melanotaenia parkinsoni	11 cm (4.3 in)
Eastern rainbowfish	Melanotaenia splendida splendida	13–15 cm (5.1–5.9 in)
Banded rainbowfish	Melanotaenia trifasciata	13 cm (5.1 in)
Celebes rainbow	Marosatherina ladigesi	8 cm (3.1 in)
Spotted blue-eye	Pseudomugil gertrudae	3–4 cm (1.2–1.6 in)
Red neon blue-eye	Pseudomugil luminatus	3–3.5 cm (1.2–1.4 in)
Delicate blue-eye	Pseudomugil tenellus	4–5.5 cm (1.6–2.2 in)
Forktail blue-eye	Pseudomugil furcatus	4–5 cm (1.6–2.0 in)	These fish need a larger aquarium than their size suggests. Though they only grow to a length of about 2 inches, they are happiest in groups of 8 – 10 or more, and they appreciate lots of swimming space.^[63]	75 - 79 °F (24 - 26 °C) ^[63]	6.5 - 8.0^[63]
Neon blue-eye	Pseudomugil cyanodorsalis	3.5 cm (1.4 in)
Pacific blue-eye	Pseudomugil signifer	3.5–7 cm (1.4–2.8 in)
Madagascar rainbowfish	Bedotia madagascariensis	7.5–8 cm (3.0–3.1 in)

Common name	Scientific name	Size	Remarks	Tank size	Temperature range	pH range
Bumblebee goby	Brachygobius doriae	4 cm (1.6 in)
	Mugilogobius rexi	3 cm (1.2 in)
Knight goby	Stigmatogobius sadanundio	9 cm (3.5 in)
Barred mudskipper	Periophthalmus argentilineatus	19 cm (7.5 in)
	Stiphodon annieae	2.5 cm (0.98 in)
Rainbow stiphodon	Stiphodon ornatus	5 cm (2.0 in)
Cobalt blue goby	Stiphodon semoni	4–5 cm (1.6–2.0 in)
	Sicyopus exallisquamulus	5 cm (2.0 in)
	Sicyopus zosterophorus	4.5 cm (1.8 in)
Bearded worm goby	Taenioides cirratus	30 cm (12 in)
Banded mogurnda	Mogurnda cingulata	13 cm (5.1 in)
Tropical carp-gudgeon	Hypseleotris cyprinoides	8 cm (3.1 in)
Crazy fish	Butis butis	15 cm (5.9 in)
Marbled goby	Oxyeleotris marmorata	30–65 cm (12–26 in)
	Rhinogobius duospilus	6 cm (2.4 in)
	Stiphodon percnopterygionus	4 cm (1.6 in)
Golden-red stiphodon	Stiphodon rutilaureus	4.5 cm (1.8 in)
Atlantic mudskipper	Periophthalmus barbarus	16 cm (6.3 in)
Desert goby	Chlamydogobius eremius	6 cm (2.4 in)
Dragon goby, Violet goby	Gobioides broussonnetii	55 cm (22 in)
Empire gudgeon	Hypseleotris compressa	12 cm (4.7 in)
Purple sleeper gudgeon	Mogurnda mogurnda	20 cm (7.9 in)
Peacock gudgeon, Peacock goby	Tateurndina ocellicauda	7.5 cm (3.0 in)	A little territorial with its own kind but is suitable for many communities of small, peaceful fish. Ideal tankmates are other species from Papua New Guinea, such as Popondetta sp. rainbowfishes; but tetras, rasboras, Corydoras cats and virtually any other small peaceful species are also suitable.^[64]	40 L (11 U.S. gal)^[64]	22–26 °C (72–79 °F)^[64]	6.5 7.5 pH^[64]
Striped sleeper goby	Dormitator maculatus	70 cm (28 in)

Common name	Scientific name	Size	Remarks	Temperature range	pH range
West African lungfish	Protopterus annectens	100 cm (39 in)
Spotted lungfish	Protopterus dolloi	130 cm (51 in)
South American lungfish	Lepidosiren paradoxa	125 cm (49 in)
Australian lungfish	Neoceratodus forsteri	150 cm (59 in)
Ocellate river stingray	Potamotrygon motoro	50 cm (19.5 in)	has venomous barbs that contain a protein based poison, if you happen to accidentally get stung you should submerge the wound in as hot as water as you can as this breaks down the protein^[65]
Black devil stingray	Potamotrygon leopoldi	111 cm (43.5 in)	see above
Marbled whipray	Fluvitrygon oxyrhynchus	36 cm (14 in)	see above
Gray bichir, Senegal bichir, or dinosaur bichir	Polypterus senegalus	70.0 cm (27.6 in) maximum length^[66]40.0 centimetres (15.7 in) in captivity^[67]	Peaceful but preys on anything smaller than its mouth^[68]	25–28 °C (77–82 °F)^[66]	6.0-8.0^[66]
Ornate bichir	Polypterus ornatipinnis	60 cm (24 in) maximum length^[69]	Peaceful but preys on anything smaller than its mouth^[68]	26–28 °C (79–82 °F)^[69]	6.0–8.0
Retropinnis bichir	Polypterus retropinnis	34.0 cm (13.4 in)^[70]	Peaceful but preys on anything smaller than its mouth^[68]	26–28 °C (79–82 °F)	6.5–7.5
Barred bichir	Polypterus delhezi	35 cm (14 in)	Peaceful but preys on anything smaller than its mouth^[68]	24–30 °C (75–86 °F)	6-8
Saddled bichir	Polypterus endlicheri	63 cm (25 in)^[71]	Peaceful but preys on anything smaller than its mouth^[68]	22–27 °C (72–81 °F)	6-8
Reedfish	Erpetoichthys calabaricus	31.4 cm (12.4 in) at maturity, 37 centimetres (15 in) maximum length^[72]		22–28 °C (72–82 °F)^[72]	6.0–8.0^[72]
Sterlet	Acipenser ruthenus	125 cm (49 in)
Shovelnose Sturgeon	Scaphirhynchus platorynchus
American paddlefish	Polyodon spathula	150 cm (59 in)
Bowfin	Amia calva	109 cm (43 in)
Spotted Gar	Lepisosteus oculatus	70 cm (27.5 in)
Longnose Gar	Lepisosteus osseus	200 cm (78.5 in)
Florida Gar	Lepisosteus platyrhincus	70 cm (27.5 in)
Alligator Gar	Atractosteus spatula	300 cm (118 in)
Cuban Gar	Atractosteus tristoechus	200 cm (78.5 in)
Tropical Gar	Atractosteus tropicus	150 cm (59 in)
Blunt-jawed elephantnose	Campylomormyrus tamandua	40 cm (16 in)
Peters' elephant nose	Gnathonemus petersii	22.5 cm (8.9 in)
African butterflyfish	Pantodon buchholzi	12 cm (4.7 in)
Aba aba	Gymnarchus niloticus	120 cm (47 in)
Reticulated knifefish	Papyrocranus afer	80 cm (31 in)
African brown knifefish	Xenomystus nigri	30 cm (12 in)
Royal knifefish	Chitala blanci	120 cm (47 in)
Clown knifefish	Chitala ornata	100 cm (39 in)
Asian arowana	Scleropages formosus	90 cm (35 in)	Preys on anything smaller than its mouth.^[73]
Gulf saratoga	Scleropages jardinii	90 cm (35 in)
Southern saratoga	Scleropages leichardti	90 cm (35 in)
Silver arowana	Osteoglossum bicirrhosum	90 cm (35 in)	Preys on anything smaller than its mouth.^[73]
Black arowana	Osteoglossum ferreirai	90 cm (35 in)	Preys on anything smaller than its mouth.^[73]
Pirarucu	Arapaima gigas	200 cm (79 in)
African arowana	Heterotis niloticus	100 cm (39 in)
Freshwater moray	Gymnothorax polyuranodon	150 cm (59 in)
Hingemouth	Phractolaemus ansorgii	25 cm (9.8 in)
Black ghost knifefish	Apteronotus albifrons	50 cm (19.5 in)	Not to be confused with the featherback "knifefish" of the Bonytongue group (see above)	23-28C (73-82F)	6.0-8.0
Brown ghost knifefish	Apteronotus leptorhynchus	27 cm (10.5 in)
Glass knifefish	Eigenmannia virescens	44 cm (17.5 in)
Electric eel	Electrophorus electricus	200 cm (78.5 in)
Northern pike	Esox lucius	150 cm (59 in)
Humphead glassfish	Parambassis pulcinella	8 cm (3.1 in)
Indian glassy fish	Parambassis ranga	8 cm (3.1 in)
	Gymnochanda filamentosa	3.8 cm (1.5 in)
Mouth almighty	Glossamia aprion	3.8 cm (1.5 in)
Amazon leaffish	Monocirrhus polyacanthus	8 cm (3.1 in)
African leaffish	Polycentropsis abbreviata	8 cm (3.1 in)
Nile perch	Lates niloticus	200 cm (79 in)
Indonesian tigerfish	Datnioides microlepis	55 cm (22 in)
Silver tigerfish	Datnioides polota	30 cm (12 in)
New Guinea tigerfish	Datnioides campbelli	32 cm (13 in)
Banded archerfish	Toxotes jaculatrix	30 cm (12 in)
Seven-spot archerfish	Toxotes chatareus	40 cm (16 in)
Spotted scat	Scatophagus argus	20 cm (7.9 in)
African scat	Scatophagus tetracanthus	30 cm (12 in)
Striped scat, spotbanded scat	Selenotoca multifasciata	40 cm (15.5 in)
Silver moony	Monodactylus argenteus	27 cm (10.5 in)
African moony	Monodactylus sebae	25 cm (10 in)
Freshwater pipefish	Doryichthys martensii	15 cm (5.9 in)
African freshwater pipefish	Enneacampus ansorgii	14 cm (5.5 in)
Zebra blenny	Omobranchus zebra	6 cm (2.4 in)
Fire eel	Mastacembelus erythrotaenia	100 cm (39 in)
Tire track eel	Mastacembelus armatus	90 cm (35 in)
Peacock eel	Macrognathus siamensis	30 cm (12 in)	They require clean water and are vulnerable to parasites, fungal diseases, and the copper-based drugs used to treat these conditions.^[74]	73-82 °F (23-28 °C)^[75]	6.0-8.0^[75]
Zebra spiny eel	Macrognathus zebrinus	46 cm (18 in)
Half-banded spiny eel	Macrognathus circumcinctus	20 cm (7.9 in)
Lesser spiny eel	Macrognathus tapirus	38 cm (15 in)
Freshwater needlefish	Xenentodon cancila	35 cm (14 in)
Grunting toadfish	Allenbatrachus grunniens	30 cm (12 in)
Leaf goblinfish	Neovespicula depressifrons	10 cm (4 in)
Freshwater sole	Achiroides melanorhynchus	14 cm (5.5 in)
Golden puffer	Auriglobus modestus	10 cm (3.9 in)	Pufferfish inflating out of water can cause death.^[76]
Green spotted puffer	Dichotomyctere nigroviridis	15 cm (5.9 in)	See above
Figure 8 pufferfish	Dichotomyctere ocellatus	6 cm (2.4 in)	See above
Humpback Puffer	Pao palembangensis	20 cm (7.9 in)	See above
Red-tail dwarf puffer	Carinotetraodon irrubesco	4.5 cm (1.8 in)	See above
Arrowhead puffer	Pao suvattii	15 cm (5.9 in)
Hairy pufferfish	Pao baileyi	12 cm (4.7 in)
Dwarf pufferfish	Carinotetraodon travancoricus	2.9 cm (1.1 in)		aka Pea Puffer
Fahaka puffer	Tetraodon lineatus	43 cm (17 in)
Mbu puffer	Tetraodon mbu	75 cm (30 in)	This fish also occurs in estuaries. largest freshwater pufferfish, they are very peaceful with most fish except, other Mbu pufferfish, other fish that will harass them. see above^[77]
Congo pufferfish	Tetraodon miurus	15 cm (5.9 in)	as it is a ambush pufferfish it is best to house it alone as it will attack tank mates. see above^[78]
	Tetraodon schoutedeni	9 cm (3.5 in)
Amazon puffer	Colomesus asellus	13 cm (5 in)
Everglades pygmy sunfish	Elassoma evergladei	3 cm (1.2 in)
Blackbanded sunfish	Enneacanthus chaetodon	10 cm (3.9 in)
Freshwater blenny	Salaria fluviatilis
Brook stickleback	Culaea inconstans
Banded darter	Etheostoma zonale
Gilt darter	Percina evides
Orangethroat darter	Etheostoma spectabile
Rainbow darter	Etheostoma caeruleum
Splendid darter	Etheostoma barrenense