Barilius_nelsoni
Opsarius nelsoni
Species of fish
Opsarius nelsoni is a freshwater fish in the family Cyprinidae. It is endemic to India and inhabits clear, gravelly streams. It grows to 6.2 cm (2.4 in) TL.[1] It might be a junior synonym of Opsarius radiolatus.[2] It is named in honour of Joseph S. Nelson, American ichthyologist.[3]