Heptapteridae

The Heptapteridae, or three-barbeled catfishes, are a family of catfish that originate from the Americas. The name Heptapteridae is derived from Greek, hepta meaning seven and pteron meaning fin; this is thought to be an allusion to the short distance between the adipose and caudal fins of Heptapterus mustelinus, the type species of the family's type genus, which gives the appearance that it has 7 instead of 8 fins in total.

Rhamdia is a genus of three-barbeled catfishes found in Mexico, Central and South America. These catfishes are nocturnal, opportunistic carnivores, found in a wide range of freshwater habitats. This genus includes a number of troglobitic members, encompassing a number of taxa, including R. enfurnada, R. guasarensis, R. laluchensis, R. laticauda, R. macuspanensis, R. quelen, R. reddelli and R. zongolicensis. In a few of these only some of their populations are troglobitic.

species of fish

Pimelodella is a genus of three-barbeled catfishes.

Phreatobius, also known as cistern catfishes, is a genus of very small catfishes (order Siluriformes) from tropical South America.

species of fish

species of fish

species of fish

species of fish

species of fish

Phenacorhamdia is a genus of three-barbeled catfishes native to tropical South America.

Heptapterus is a genus of three-barbeled catfishes native to South America.

Myoglanis is a genus of three-barbeled catfishes native to tropical South America.

species of fish

Rhamdella is a genus of three-barbeled catfishes native to South America.

species of fish

Nemuroglanis is a genus of three-barbeled catfishes. With the exception of N. panamensis from Panama, they are native to tropical South America.

Imparfinis is a genus of three-barbeled catfishes native to South America, with a single species (I. lineatus) in Central America.

species of fish

species of fish

species of fish

species of fish

species of fish

Brachyrhamdia is a genus of three-barbeled catfishes native to South America.

species of fish

species of fish

Chasmocranus is a genus of three-barbeled catfishes native to South America.

species of fish

species of fish

species of fish

Cetopsorhamdia is a genus of three-barbeled catfishes native to South America.

Rhamdiopsis is a genus of three-barbeled catfishes native to South America where they are endemic to Brazil. One species, R. krugi, is troglobitic.

Leptorhamdia is a genus of three-barbeled catfishes native to tropical South America.

Rhamdioglanis is a genus of three-barbeled catfishes native to South America where they are endemic to Brazil.

Gladioglanis is a genus of three-barbeled catfishes native to South America.

Brachyglanis is a genus of Three-barbeled catfishes native to South America.

species of fish

Acentronichthys leptos is the only species of catfish (order Siluriformes) in the genus Acentronichthys of the family Heptapteridae. This species occurs in coastal streams in Brazil from Rio de Janeiro to Santa Catarina State, in São Mateus, Espírito Santo State and on Leopoldina, Minas Gerais. This species grows to in SL.