Actinopteri (ray-finned fishes) > Perciformes/Cottoidei
(Sculpins) > Cottidae
Etymology: Myoxocephalus: Greek, myos = muscle, and also, mouse + Greek, kephale = head (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; reef-associated; depth range - 60 m (Ref. 50550), usually - m (Ref. ). Temperate; 0°C -
North Pacific: Unalaska I., Aleutian Is. To SE Alaska at Port Conclusion; Commander Is. and east coast of Kamchatka to Sea of Okhotsk and to Sea of Japan to South Korea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 62.0 cm FL male/unsexed; (Ref. 115020); max. published weight: 4.0 kg (Ref. 115020); max. reported age: 12 years (Ref. 56449)
Occurs in the littoral zone (Ref. 26334), over rocky reefs (Ref. 559). Enters rivers (Refs. 2058, 37812).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nakabo, T., 2002. Fishes of Japan with pictorial keys to the species, English edition II. Tokai University Press, Japan, pp 867-1749. (Ref. 43239)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 0.6 - 8.5, mean 2.6 °C (based on 572 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00446 - 0.01481), b=3.18 (3.01 - 3.35), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.7 ±0.2 se; based on size and trophs of closest relatives
Generation time: 4.2 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (45 of 100) .
Nutrients (Ref. 124155
): Calcium = 50.2 [8.5, 171.7] mg/100g ; Iron = 0.251 [0.088, 0.896] mg/100g ; Protein = 18.5 [15.4, 21.1] % ; Omega3 = 0.65 [0.23, 2.02] g/100g ; Selenium = 14 [4, 41] μg/100g ; VitaminA = 43.4 [9.4, 192.3] μg/100g ; Zinc = 1.1 [0.4, 2.5] mg/100g (wet weight);