Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Psychrolutidae
Etymology: Malacocottus: Greek, malakos, = soft + Greek, kottos = a fish (Ref. 45335). More on author: Smith.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 300 - 1000 m (Ref. 43939), usually 300 - 600 m (Ref. 50550). Deep-water
North Pacific: off southeastern Kamchatka and Sea of Okhotsk off southwest coast of Kamchatka, eastern Sakhalin Island, and Hokkaido, Japan. Also from the Bering Sea north of Rat Islands and Prince William Sound, Alaska.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.8 cm TL male/unsexed; (Ref. 43939)
Morphology | Morphometrics
Collected from sand and broken shell bottom; also caught in pelagic environment (Ref. 43939).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mecklenburg, C.W., T.A. Mecklenburg and L.K. Thorsteinson, 2002. Fishes of Alaska. American Fisheries Society, Bethesda, Maryland. xxxvii +1037 p. (Ref. 43939)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 0.4 - 5.2, mean 2.8 °C (based on 118 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.1 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .