HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPupfishesAsh Meadows pupfish Ash Meadows pupfish (Cyprinodon nevadensis mionectes) Scientific name: Cyprinodon nevadensis mionectes Miller, 1948 The Ash Meadows pupfish (Cyprinodon nevadensis mionectes) is a freshwater fish of the family Cyprinodontidae. In the aquarium it needs water at 24–30°C (75–86°F). Native range: North America, Ash Meadows in Nevada, USA. Ash Meadows pupfish care at a glanceTemperature24–30°C (75–86°F) BiologyNot a seasonal killifish. Is difficult to maintain in aquarium.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCyprinodon nevadensis mionectesFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentFreshwater; benthopelagic; non-migratoryClimateSubtropicalDistributionNorth America: Ash Meadows in Nevada, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceMedium, 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