Cyphocharax, Fowler, 1906

Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, Neotropical Ichthyology 16 (2), pp. 1-111 : 43

Cyphocharax

1. Lateral line with 31 to 36 scales; transverse series above lateral line with 4½ to 7 scale rows.................... C. modestus

1’. Lateral line with 39 to 45 scales; transverse series above lateral line with 7½ to 9 scale rows ............. C. nagelii