Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cottidae
Etymology: Gymnocanthus: Greek, gymnos = naked + Greek, akantha = thorn (Ref. 45335). More on authors: Gilbert & Burke.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 15 - 450 m (Ref. 50550). Temperate
North Pacific: eastern Hokkaido, Japan to the Bering Sea.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 24 - 26 cm
Max length : 29.0 cm SL male/unsexed; (Ref. 559)
Morphology | Morphometrics
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 0.4 - 5.9, mean 2.8 (based on 418 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00391 - 0.01066), b=3.03 (2.88 - 3.18), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.35 se; Based on food items.
Generation time: 8.5 ( na - na) years. Estimated as median LN(3)/K based on 2 growth studies.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (tm=5-6; tmax=17; K=0.13-0.17; Fec=6,100-72,000).
Vulnerability (Ref. 59153
): High vulnerability (55 of 100) .