Triportheidae

Agoniates is genus of freshwater ray-finned fishes belonging to the family Triportheidae, the hatchet characins or keeled characins. The fishes in this genus are found in tropical South America. It is the only genus in the subfamily Agoniatinae.

Triportheidae, the hatchet characins, is a family of characiform fishes, including about 23 species. This family was raised from the status of a subfamily to family based on extensive analysis of characiform species.