Hypoptopoma psilogaster Fowler 1915

This species is distinguished from its congeners by the presence of an elongated dark spot along the middle caudal-fin branched rays, not involving the lanceolate plates at the base ofthe fin; the spot is typically extended over equal number of upper- and lower-lobe branched rays and along more than two thirds of the ray length (Ref. 84367).

Vertebrae: 28 - 27

Hypoptopoma psilogaster is a species of catfish in the family Loricariidae. It is native to South America, where it is known only from the Amazon basin. It reaches 7 cm (2.8 inches) SL.