HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPoeciliidsCoatzacoalcos gambusia Coatzacoalcos gambusia (Heterophallus rachovii) Scientific name: Heterophallus rachovii Regan, 1914 The Coatzacoalcos gambusia (Heterophallus rachovii) is a freshwater fish of the family Poeciliidae. In the aquarium it needs water at 22–26°C (72–79°F). Native range: Central America, Arroyo Santiago Vasques near Jesus Carranza and Laguna de la Sapote in Veracruz, Mexico. Coatzacoalcos gambusia care at a glanceTemperature22–26°C (72–79°F) Species factsScientific nameHeterophallus rachoviiFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length2.5EnvironmentFreshwater; benthopelagicClimateTropicalDistributionCentral America: Arroyo Santiago Vasques near Jesus Carranza and Laguna de la Sapote in Veracruz, Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026