HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPoeciliidsClearfin livebearer Clearfin livebearer (Poeciliopsis lucida) Scientific name: Poeciliopsis lucida Miller, 1960 The Clearfin livebearer (Poeciliopsis lucida) is a freshwater fish of the family Poeciliidae. Native range: Central America, Rio Mocorito basin and Rio del Fuerte on the Gulf of California in Sinaloa, Mexico. Species factsScientific namePoeciliopsis lucidaFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length3.0EnvironmentFreshwater; benthopelagicClimateSubtropicalDistributionCentral America: Rio Mocorito basin and Rio del Fuerte on the Gulf of California in Sinaloa, 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