HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPoeciliidsForlon gambusia Forlon gambusia (Gambusia regani) Scientific name: Gambusia regani Hubbs, 1926 The Forlon gambusia (Gambusia regani) 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, Tamaulipas, Mexico. Forlon gambusia care at a glanceTemperature22–28°C (72–82°F) BiologyInhabits small streams, small rivers and especially adjacent shallow marshes and pools.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGambusia reganiFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length3.5EnvironmentFreshwater;; pH range: 6.5 - 7.8; dH range: ? - 25 benthopelagicClimateTropicalDistributionCentral America: Tamaulipas, 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