Suckerfish or sucker may refer to:

• the remoras (family Echeneidae): ray-finned fishes that use suction to hold onto larger marine animals
• the family Catostomidae (suckers): freshwater fish found mostly in North America
• the species Hypostomus plecostomus (the suckermouth catfish), or other members of family Loricariidae
• Chinese sucker fish (Beaufortia kweichowensis): a hillstream loach species native to the riverine fauna of China

• Sucker (disambiguation)
• Fish (disambiguation)
• Sucker barb (Barbichthys laevis), a ray-finned fish species
• Sucker catfish (disambiguation)
• Suckermouth

This disambiguation page lists articles associated with the title Suckerfish.
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