HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesSplitfinsMormon White River springfish Mormon White River springfish (Crenichthys baileyi thermophilus) Scientific name: Crenichthys baileyi thermophilus Williams & Wilde, 1981 The Mormon White River springfish (Crenichthys baileyi thermophilus) is a freshwater fish of the family Goodeidae. In the aquarium it needs water at 26–30°C (79–86°F). Native range: North America, USA. Mormon White River springfish care at a glanceTemperature26–30°C (79–86°F) Species factsScientific nameCrenichthys baileyi thermophilusFamilyGoodeidae (Splitfins)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentFreshwater; benthopelagic; non-migratoryClimateSubtropicalDistributionNorth America: USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026