HomeFish encyclopediaRay-finned fishesSticklebacks and SeamothsSticklebacks and tubesnoutsSanta Ana stickleback Santa Ana stickleback (Gasterosteus aculeatus santaeannae) Scientific name: Gasterosteus aculeatus santaeannae Regan, 1909 The Santa Ana stickleback (Gasterosteus aculeatus santaeannae) is a freshwater fish of the family Gasterosteidae. Native range: Subtropical. BiologyNorth America: California-Baja California ecoregion. Countries | FAO areas | Ecosystems | Occurrences | IntroductionsSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGasterosteus aculeatus santaeannaeFamilyGasterosteidae (Sticklebacks and tubesnouts)OrderGasterosteiformes (Sticklebacks and Seamoths)ClassActinopterygii (Ray-finned fishes)EnvironmentMarine; freshwater; brackish; benthopelagicClimateSubtropicalDistributionSubtropicalConservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: public aquariumsResilienceHigh, 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