Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; oceanodromous (Ref. 51243); depth range 25 - 600 m (Ref. 35388), usually 100 - 400 m. Temperate; 81°N - 42°N, 71°W - 59°E
Northwest Atlantic: western Greenland and Nova Scotia in Canada to Massachusetts in USA and perhaps to New Jersey, USA (Ref. 7251). Northeast Atlantic: Spitsbergen southward to Scandinavian coasts (to about Bergen, also Iceland and south-eastern coasts of Greenland.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 50 - 60 cm
Max length : 180 cm TL male/unsexed; (Ref. 7251); common length : 120 cm TL male/unsexed; (Ref. 4694); max. published weight: 27.9 kg (Ref. 40637)
Coloration greyish brown with many distinct spots on body and dorsal fin (Ref. 35388).
Inhabits offshore waters over soft bottoms, often with boulders, from 25-590 m, but most common from 100-400 m (Ref. 4694). Benthic (Ref. 58426). Feeds mainly on echinoderms, but also crustaceans, mollusks, fishes (Ref. 4694) and worms (Ref. 58426). In Barents sea, it reached at least 80 cm, age 9 years. Marketed fresh or as frozen fillets. Leather can be made of the skin (Ref. 35388).
Spawning happens between the months of September and January at 250 m depth. Females lay great egg bunches in nests built on the ground. The size of the eggs increases with the size of the female. Egg size 5-6 mm, larval length at hatching 21-24 mm.
Barsukov, V.V., 1986. Anarhichadidae. p. 1113-1116. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the North-eastern Atlantic and the Mediterranean. volume 3. UNESCO, Paris. (Ref. 4694)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: minor commercial; gamefish: yes
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 0.6 - 7.6, mean 3.5 °C (based on 717 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5938 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00183 - 0.00626), b=3.19 (3.02 - 3.36), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.8 ±0.62 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (K=0.06-0.13; tm=8; Fec=4,200-35,200).
Vulnerability (Ref. 59153
): Very high vulnerability (80 of 100) .
Nutrients (Ref. 124155
): Calcium = 8.57 [3.24, 31.95] mg/100g ; Iron = 0.192 [0.088, 0.530] mg/100g ; Protein = 17.4 [15.3, 19.8] % ; Omega3 = 0.369 [0.226, 0.587] g/100g ; Selenium = 45.3 [15.5, 128.5] μg/100g ; VitaminA = 8.53 [2.93, 23.28] μg/100g ; Zinc = 0.541 [0.219, 1.005] mg/100g (wet weight);