Tyttobryconinae

Priocharax is a genus of very small freshwater ray-finned fishes belonging to the family Acestrorhamphidae (American characins). The fishes in this genus are found in the Amazon and Orinoco basins in tropical South America.

Tyttobrycon is a genus of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are found in the Amazon Basin in South America.