HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesSwan river goby Swan river goby (Pseudogobius olorum) Scientific name: Pseudogobius olorum Sauvage, 1880 The Swan river goby (Pseudogobius olorum) is a freshwater fish of the family Gobiidae. Native range: Oceania, southern Australia. BiologyFound in freshwater streams and ponds and brackish estuaries. Usually over mud and rock bottoms, sometimes among weeds. Feeds mainly on insects, crustaceans and algae. Spawns during spring in the upper reaches of estuaries (in less than 30% salinity), where aquatic vegetation is plentiful.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudogobius olorumFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.0Common length4.0EnvironmentFreshwater; brackish; demersalClimateSubtropicalDistributionOceania: southern Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tm SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026