HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPoeciliidsBlackstripe livebearer Blackstripe livebearer (Poeciliopsis prolifica) Scientific name: Poeciliopsis prolifica Miller, 1960 The Blackstripe livebearer (Poeciliopsis prolifica) is a freshwater fish of the family Poeciliidae. In the aquarium it needs water at 24–28°C (75–82°F). Native range: Central America, lower courses of Rio Yaqui in Sonora and along the coast to San Blas in Nayarit, Mexico. Blackstripe livebearer care at a glanceTemperature24–28°C (75–82°F) Species factsScientific namePoeciliopsis prolificaFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length3.0EnvironmentFreshwater; brackish;; pH range: ? - 8.0; dH range: 2 - 10 benthopelagicClimateSubtropicalDistributionCentral America: lower courses of Rio Yaqui in Sonora and along the coast to San Blas in Nayarit, Mexico.Conservation status (IUCN)Near Threatened (NT)Threat 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