Original description:
- Regan, Charles Tate. 1914. "Descriptions of two new cyprinodont fishes from Mexico, presented to the British Museum by Herr A. Rachow". Annals and Magazine of Natural History. 14(79):65-67 (ffm04568)
Type species: Heterophallus rachovii Regan, 1914 (monotypy).
Described species included (4):
valid: 3 synonym: 1- Heterophallus rachovii Regan, 1914 (valid)
- Gambusia atzi Rosen & Gordon, 1951 (synonym)
- Dicerophallus echeagarayi Alvarez, 1952 (valid)
- Heterophallus milleri Radda, 1987 (valid)