HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPupfishesCuatro Cienegas pupfish Cuatro Cienegas pupfish (Cyprinodon bifasciatus) Scientific name: Cyprinodon bifasciatus Miller, 1968 The Cuatro Cienegas pupfish (Cyprinodon bifasciatus) is a freshwater fish of the family Cyprinodontidae. Native range: Central America, Cuatro Ci?negas system, Mexico. Species factsScientific nameCyprinodon bifasciatusFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length6.0EnvironmentFreshwater; benthopelagic; non-migratoryClimateTropicalDistributionCentral America: Cuatro Ci?negas system, Mexico.Conservation status (IUCN)Lower Risk: least concern (LR/lc)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Assuming tm SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026