HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPupfishesMezquital pupfish Mezquital pupfish (Cyprinodon meeki) Scientific name: Cyprinodon meeki Miller, 1976 The Mezquital pupfish (Cyprinodon meeki) is a freshwater fish of the family Cyprinodontidae. Native range: Central America, Mexico. Species factsScientific nameCyprinodon meekiFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.0Common length3.9EnvironmentFreshwater; benthopelagic; non-migratoryClimateTropicalDistributionCentral America: Mexico.Conservation status (IUCN)Critically Endangered (CR) (A1ae+2e)Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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