HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPoeciliidsYucatan gambusia Yucatan gambusia (Gambusia yucatana) Scientific name: Gambusia yucatana Regan, 1914 The Yucatan gambusia (Gambusia yucatana) is a freshwater fish of the family Poeciliidae. In the aquarium it needs water at 22–28°C (72–82°F). Native range: Central America, Mexico, Guatemala and Belize. Yucatan gambusia care at a glanceTemperature22–28°C (72–82°F) Species factsScientific nameGambusia yucatanaFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.5EnvironmentFreshwater;; pH range: 7.5 - 8.3; dH range: 15 - 30 benthopelagic; non-migratoryClimateTropicalDistributionCentral America: Mexico, Guatemala and Belize.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tm SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026