HomeFish encyclopediaRay-finned fishesCatfishEeltail catfishesFreshwater cobbler Freshwater cobbler (Tandanus bostocki) Scientific name: Tandanus bostocki Whitley, 1944 The Freshwater cobbler (Tandanus bostocki) is a freshwater fish of the family Plotosidae. In the aquarium it needs water at 25°C (77°F). Native range: Oceania, endemic to Australia. Freshwater cobbler care at a glanceTemperature25°C (77°F) BiologyLives in slow-flowing streams, ponds and reservoirs. Occurs in isolated pools in riverbeds and some freshwater lakes, swimming close to rocky, gravelly or sandy bottoms. Underwater cavities in river banks and root mounds of sedge tussocks may be utilized for shelter. Tolerant of brackish conditions. Benthic.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTandanus bostockiFamilyPlotosidae (Eeltail catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length50.0Common length25.0EnvironmentFreshwater; demersalClimateTemperateDistributionOceania: endemic to Australia.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousResilienceMedium, 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