HomeFreshwater aquarium fishRainbowfish & killifishLa Palma pupfish La Palma pupfish (Cyprinodon longidorsalis) Scientific name: Cyprinodon longidorsalis Lozano-Vilano & Contreras-Balderas, 1993 The La Palma pupfish (Cyprinodon longidorsalis) is a freshwater fish of the family Cyprinodontidae. Native range: Central America, Mexico. BiologyThis species is unique in having the following characters: a long depressed dorsal reaching posteriorly from 3/4 of the length of caudal peduncle to caudal base; dorsal origin in front of pelvic fin; 0-2 teeth on fourth ceratobranchial; lips as thick or thicker than pupil diameter, lower one wide with a marked fold in the cleft; males golden blue from head to body, with 7-8 bars, the first 3-4 only on dorsum, the others to venter; females with central regular ocellus of dorsal fin larger than pupil.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCyprinodon longidorsalisFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.1EnvironmentFreshwater; benthopelagic; non-migratoryClimateTropicalDistributionCentral America: Mexico.Conservation status (IUCN)Extinct in the Wild (EW)Threat to humansHarmlessUsesAquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More rainbowfish & killifishYellowbelly gudgeonAllomogurnda nesolepisKamaka rainbowfishMelanotaenia kamakaFlagfishJordanella floridaeBluefin killifishLucania goodeiBanded rainbowfishMelanotaenia trifasciataStriped panchaxAplocheilus lineatusSee all rainbowfish & killifish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026