HomeFish encyclopediaRay-finned fishesCodsHakes and burbotsThreadfin rockling Threadfin rockling (Gaidropsarus ensis) Scientific name: Gaidropsarus ensis Reinhardt, 1837 The Threadfin rockling (Gaidropsarus ensis) is a marine fish of the family Lotidae. BiologyDorsal spines (total): 0; Anal spines: 0Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGaidropsarus ensisFamilyLotidae (Hakes and burbots)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length40.0Depth range0–2000 m (0–6562 ft)EnvironmentMarine; benthopelagic; depth range 0 - 2000 mClimateTemperateDistributionNorthwest Atlantic: Baffin Bay, Greenland, and from deep waters off the east coast of North America from near Browns Bank (Canada) to off Cape Hatteras, North Carolina (USA).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceMedium, 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