Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cottidae
Etymology: Icelus: From Icelus = the Morpheus name; mythology.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 175 - 900 m (Ref. 50550), usually 400 - 600 m (Ref. 56390). Temperate
Northwest Pacific: off Hokkaido, Japan to the northern Sea of Okhotsk, Kuril Islands and Kamchatka
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.6 cm TL male/unsexed; (Ref. 56390); max. published weight: 50.00 g (Ref. 56395); max. reported age: 7 years (Ref. 56390)
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
Fisheries: of no interest
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 0.3 - 3.6, mean 0.8 (based on 30 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00302 - 0.01661), b=3.13 (2.93 - 3.33), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.4 se; Based on diet studies.
Generation time: 6.5 ( na - na) years. Estimated as median LN(3)/K based on 1 growth studies.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (43 of 100) .