Ancistrus cryptophthalmus
Ancistrus cryptophthalmus is a species of catfish in the family Loricariidae. It is a troglomorphic species that is native to South America and occurs only in the São Vicente and Angélica-Bezerra cave system in the Paranã River basin, which is part of the Tocantins River drainage in Brazil. The species reaches  SL. Alongside Ancistrus galani and A. formoso, this species displays characteristics unusual among loricariids, such as reduced pigmentation and atrophied eyes, which are adaptations to a subterranean habitat that can be found in various types of cavefish. References 

Fish described in 1987
cryptophthalmus
Cave fish