HomeFish encyclopediaRay-finned fishesSmeltsGalaxiidsShortjaw kokopu Shortjaw kokopu (Galaxias postvectis) Scientific name: Galaxias postvectis Clarke, 1899 The Shortjaw kokopu (Galaxias postvectis) is a freshwater fish of the family Galaxiidae. Native range: Oceania, endemic to New Zealand. BiologyAdults are found in freshwater; young in marine and estuarine waters.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGalaxias postvectisFamilyGalaxiidae (Galaxiids)OrderOsmeriformes (Smelts)ClassActinopterygii (Ray-finned fishes)Maximum length26.0EnvironmentMarine; freshwater; brackish; demersal; amphidromousClimateSubtropicalDistributionOceania: endemic to New Zealand.Conservation status (IUCN)Vulnerable (VU) (B1+2bcd)Threat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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