Family Aspredinidae

Acanthobunocephalus - Acanthobunocephalus nicoi can be differentiated from other aspredinids by the presence of a dorsal fin spine locking mechanism and a rigid dorsal fin spine.

Amaralia - Amaralia hypsiura are found throughout the Amazon River basin.

Aspredinichthys - Aspredinichthys is a genus of catfishes of the family Aspredinidae.

Aspredo - There are 2 fish genera named Aspredo:

Bunocephalus - Bunocephalus is a genus of catfishes of the family Aspredinidae.

Dupouyichthys - Dupouyichthys sapito is the only species of catfishes in the genus Dupouyichthys of the family Aspredinidae.

Ernstichthys - This genus occurs in the Amazon and Orinoco basins.

Hoplomyzon - Hoplomyzon is distributed in the Lake Maracaibo, Orinoco, and Amazon basins.

Micromyzon - This genus and species were first described in 1996.

Platystacus - Bunocephalus is a genus of catfishes of the family Aspredinidae.

Pseudobunocephalus - Pseudobunocephalus is a genus of catfishes of the family Aspredinidae.

Pterobunocephalus - Pterobunocephalus is a genus of catfishes of the family Aspredinidae.

Xyliphius - This genus appears to be widespread in the Magdalena, Orinoco, Amazon, and Paraguay-Paraná River systems.