HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsSculpinsSmoothgum sculpin Smoothgum sculpin (Radulinus vinculus) Scientific name: Radulinus vinculus Bolin, 1950 The Smoothgum sculpin (Radulinus vinculus) is a marine fish of the family Cottidae. Native range: Eastern Central Pacific, central California to Diablo Cove in southern California, USA. Species factsScientific nameRadulinus vinculusFamilyCottidae (Sculpins)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length6.4EnvironmentMarine; demersalClimateSubtropicalDistributionEastern Central Pacific: central California to Diablo Cove in southern California, 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