HomeFish encyclopediaRay-finned fishesSmeltsGalaxiidsLongjawed galaxias Longjawed galaxias (Galaxias prognathus) Scientific name: Galaxias prognathus Stokell, 1940 The Longjawed galaxias (Galaxias prognathus) is a freshwater fish of the family Galaxiidae. Native range: Oceania, endemic to New Zealand. Species factsScientific nameGalaxias prognathusFamilyGalaxiidae (Galaxiids)OrderOsmeriformes (Smelts)ClassActinopterygii (Ray-finned fishes)Maximum length9.1EnvironmentFreshwater; benthopelagic; non-migratoryClimateTemperateDistributionOceania: endemic to New Zealand.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, 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