Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cottidae
Etymology: Gymnocanthus: Greek, gymnos = naked + Greek, akantha = thorn (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 0 - 556 m (Ref. 117245). Polar; -2°C - 13°C (Ref. 4698); 84°N - 43°N, 180°W - 180°E (Ref. 117245)
Arctic, Northwest to Northeast Atlantic: to Gulf of St. Lawrence in Canada and rarely Maine, USA. Northeast Atlantic: eastern coasts of Greenland, Iceland, northern coast of Norway to White and throughout Barents Sea to Spitzbergen and Novaya Zemlya (Ref. 4698).
Length at first maturity / Size / Weight / Age
Maturity: Lm 9.0  range ? - ? cm
Max length : 30.0 cm TL male/unsexed; (Ref. 9707)
(total): 10 - 12;
soft rays: 15 - 19. Back dark, flanks with dark blotches forming two blackish-brown bands, irregular line of dark spots below lateral line; belly light, yellowish in females, with roundish white spots in males; dorsal fin with light and dark stripes, caudal, anal and pectoral fins light, the last with a yellow tip and with 4-5 transverse lines of dark spots (Ref. 4698).
Burrows into sand and sand-mud bottoms with salinities of 32-35 ppt, sometimes as low as 16-30 ppt (Ref. 4698). Benthic (Ref. 58426). Feeds on small benthic amphipods and polychaetes (Ref. 4698).
Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): -1.6 - 1.8, mean -0.6 (based on 2043 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00465 - 0.01558), b=3.15 (2.99 - 3.31), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.49 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=2-4; tmax=9; Fec=3,030).
Vulnerability (Ref. 59153
): Moderate vulnerability (44 of 100) .