Aphyocheirodon

Aphyocheirodon is a monospecific genus of freshwater ray-finned fish belonging to the family Cheirodontinae.
The only species in the genus is Aphyocheirodon hemigrammus, a characin, which is endemic to Brazil, and has a highly restricted range in the upper basin of the Paraná River, being found in the Rio [Grande |Rio Grande] in São Paulo and Minas Gerais, and in the Mogi-Guaçu River in São Paulo. This species occurs in shallow lagoons with a mean depth of, with a mixed substrate of mud and sand where there is abundant aquatic vegetation. It can also be found in lower-order streams with rapids and backwaters. Floodplain drainage and landfilling have been observed to cause a decline in the quality of habitat.
This species has a maximum total length of.