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 0 - 930 m (Ref. 58496). Polar; 84°N - 51°N, 180°W - 180°E
Western Atlantic: Canadian Arctic to Hudson and Ungava bays and Newfoundland in Canada. Eastern Atlantic: Greenland, Iceland, Jan Mayen, Spitzbergen, Barents and Kara seas, Bohuslän in Norway (Ref. 4926). Reported from the Alaskan Beaufort Sea (Ref. 28503).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.7 cm SL male/unsexed; (Ref. 4698); common length : 7.0 cm SL male/unsexed; (Ref. 35388); common length :12 cm SL (female)
(total): 7 - 10;
soft rays: 12 - 17. Yellowish with brown spots, most numerous on back; narrow stripes on soft dorsal, pectoral and caudal fins, with dark spots on fin rays (Ref. 4698). Head height equal to head width. Males with a long pointed genital papilla (Ref. 35388).
Found on muddy, sandy or rocky bottoms or among algae (Ref. 4698). Maximum depth at 930 m (Ref. 58426). Benthic (Ref. 58426). Feeds on benthic polychaetes, crustaceans (Hyppolyte, Boreophausia), and large hyperiids (Phascolosoma) (Ref. 4698). Males usually below 7 cm and females below 12 cm. Lives at temperatures -1.7-10°C. Female lays 150-1,000 eggs with a diameter of 3mm (Ref. 35388).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. 115185)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): -1.3 - 4.6, mean 0.2 (based on 3829 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00295 - 0.01699), b=3.14 (2.94 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.35 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (40 of 100) .