HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsSnailfishesSpiny snailfish Spiny snailfish (Acantholiparis opercularis) Scientific name: Acantholiparis opercularis Gilbert & Burke, 1912 The Spiny snailfish (Acantholiparis opercularis) is a marine fish of the family Liparidae. Native range: North Pacific, Kamchatka to below the Gulf of Alaska and southward to central Oregon, USA. Species factsScientific nameAcantholiparis opercularisFamilyLiparidae (Snailfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length6.9Depth range227–3610 m (745–11844 ft)EnvironmentMarine; bathydemersal; depth range 227 - 3610 mClimateDeep-waterDistributionNorth Pacific: Kamchatka to below the Gulf of Alaska and southward to central Oregon, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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