HomeFish encyclopediaRay-finned fishesSticklebacks and SeamothsSticklebacks and tubesnoutsSmoothtail ninespine stickleback Smoothtail ninespine stickleback (Pungitius laevis) Scientific name: Pungitius laevis Cuvier, 1829 The Smoothtail ninespine stickleback (Pungitius laevis) is a freshwater fish of the family Gasterosteidae. Native range: Euorope, coastal areas of western Europe from Netherlands to the Garonne drainage (France), Ireland and southern Great Britain. BiologyAdults inhabit shallow still water with dense vegetation. Feed predominantly on zooplankton, small crustaceans and benthic insects. Spawn for the first time at 1 year of age. Spawning takes place in April-June. Males build, guard and aerate the nest where the eggs are depositedSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePungitius laevisFamilyGasterosteidae (Sticklebacks and tubesnouts)OrderGasterosteiformes (Sticklebacks and Seamoths)ClassActinopterygii (Ray-finned fishes)Maximum length8.0EnvironmentMarine; freshwater; brackish; benthopelagicClimateTemperateDistributionEuorope: coastal areas of western Europe from Netherlands to the Garonne drainage (France), Ireland and southern Great Britain.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries:ResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026