HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesSplitfinsPahrump poolfish Pahrump poolfish (Empetrichthys latos latos) Scientific name: Empetrichthys latos latos Miller, 1948 The Pahrump poolfish (Empetrichthys latos latos) is a freshwater fish of the family Goodeidae. In the aquarium it needs water at 20–25°C (68–77°F). Pahrump poolfish care at a glanceTemperature20–25°C (68–77°F) BiologyInhabits warm ( about 25?C) springs, usually deep holes. Not a seasonal killifish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEmpetrichthys latos latosFamilyGoodeidae (Splitfins)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length6.0EnvironmentFreshwater;; pH range: 7.8 - 8.4; dH range: 7 - 30 demersal; non-migratoryClimateTropicalDistributionNorth America: restricted to three springs in Pahrump Valley, Nye County in Nevada, USA where it was the only native fish. Now exists only outside Pahrump Valley, where it was transplanted to prevent its extinction.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