Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; oceanodromous (Ref. 51243). Temperate
Northwest Pacific: Japan and Korea.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 26 - ? cm
Max length : 43.0 cm TL male/unsexed; (Ref. 40637); max. published weight: 1.2 kg (Ref. 40637)
Short description
Identification keys | Morphology | Morphometrics
Inhabit rocky shore areas. Juveniles associate with drifting seaweed (Ref. 12114, 12115). Feed on crabs and fishes (Ref. 9137). Viviparous (Ref. 34817).
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. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Gamefish: yes
Tools
Special reports
Download XML
Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 3.9 - 20.4, mean 14.5 °C (based on 62 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00919 - 0.02172), b=3.03 (2.90 - 3.16), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 4.3 ±0.4 se; based on diet studies.
Resilience (Ref.
120179): Low, minimum population doubling time 4.5 - 14 years (Fec=12,000).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).
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