HomeMarine aquarium fishOther marine fishOyster toadfish Oyster toadfish (Opsanus tau) Scientific name: Opsanus tau Linnaeus, 1766 The Oyster toadfish (Opsanus tau) is a marine fish of the family Batrachoididae. Native range: Western Atlantic, Cape Cod, Massachusetts to Florida in USA, straggling south to Miami in cold years. BiologyLargely inhabits inshore water on rocky bottoms and reefs, jetties and wrecks. Frequently occurs among litter and tolerates polluted water. Becoming important as an experimental fish because of its size and hardiness. Has been reared in captivity.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOpsanus tauFamilyBatrachoididae (Toadfishes)OrderBatrachoidiformes (Toadfishes)ClassActinopterygii (Ray-finned fishes)Maximum length43.2EnvironmentMarine; reef-associatedClimateSubtropicalDistributionWestern Atlantic: Cape Cod, Massachusetts to Florida in USA, straggling south to Miami in cold years.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousUsesGamefish: yes; aquarium: public aquariumsResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.11; tmax=8) More other marine fishShortnose batfishOgcocephalus nasutusRed brotulaBrosmophycis marginataLongnose killifishFundulus similisWhitingMerlangius merlangusCardinal soldierfishPlectrypops retrospinisTube-snoutAulorhynchus flavidusSee all other marine fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026