Roestinae

Gilbertolus is a genus of freshwater ray-finned fishes belonging to the family Acestrorhynchidae, which includes the biting tetras and freshwater barracudas. The fishes in this genus are from northwestern South America, restricted to the Atrato, Magdalena and Maracaibo basins.

Roestes is a genus of freshwater ray-finned fishes belonging to the family Acestrorhynchidae, which includes the biting tetras and freshwater barracudas. The fishes in this genus are from tropical South America, where they are found in the Amazon Basin and various rivers in the Guianas.