Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cottidae
Etymology: Hemilepidotus: Greek, hemi = half + Greek, lepis = scale + Greek, ous, otis = ear (Ref. 45335). More on author: Bean.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 4 - 320 m (Ref. 50550). Temperate
Arctic: Chukchi Sea. North Pacific: Hokkaido, Japan and Sea of Okhotsk and to Buldir Island in the Aleutian chain.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm FL male/unsexed; (Ref. 115020)
(total): 11 - 13;
soft rays: 16 - 18. Scales on ventral scale row less than 1/2 the size of those on the dorsal scale row; fin membrane of spiny dorsal well incised; 4 preopercular spines; the 4th simple (Ref. 559).
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. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): -1.3 - 5.3, mean 0.9 (based on 783 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00368 - 0.01301), b=3.06 (2.89 - 3.23), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.50 se; Based on food items.
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High to very high vulnerability (68 of 100) .