title: Heterophallus
text: # Heterophallus
  
  Heterophallus is a genus of small poeciliids found near the coast in calm waters of river basins in southeastern Mexico.
  
  ## Species
  
  There are currently two or three recognized species in this genus:
  
  * Heterophallus echeagarayi (Álvarez, 1952) (Maya gambusia)
  * Heterophallus milleri Radda, 1987 (Grijalva gambusia)
  * Heterophallus rachovii Regan, 1914 (Coatzacoalcos gambusia)
  
  FishBase places Heterophallus echeagarayi in the genus Gambusia.
  
  