Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
Biển gần đáy; Mức độ sâu ? - 110 m (Ref. 2850). Temperate; 66°N - 34°N
Eastern Pacific: St. Lawrence Island, Alaska to San Miguel Island, southern California, USA. Possibly occurring in Japan (Ref. 2850).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm
Max length : 20.0 cm TL con đực/không giới tính; (Ref. 2850)
Các tia vây lưng cứng (tổng cộng) : 8 - 9; Các vây lưng mềm (tổng cộng) : 27 - 30; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 18 - 20. Caudal fin rounded, directed upward (Ref. 6885). Color variable, gray above with dark markings and obscure dusky bands, paler below; spinous dorsal darker; other fins except pelvic fins diagonally streaked darker; sometimes red flecks on rayed dorsal and on eyes; a very distinct black band running diagonally down and back through eye (Ref. 6885). A recognizable variant occurs in Knight Inlet, British Columbia - the first caudal fin is dominated by the II, III, I rather than the first four spines and the whole fin is frail and when removed from fluid appears more like a mast than a sail (Ref. 6885).
Occurs inshore and to 110 m depth, mostly on rocky bottoms and areas with algae (Ref. 2850). Nocturnal (Ref. 6885). May be found upside down against roofs of crevices (Ref. 6885). Swims with its dorsal fin extended in front of its head (Ref. 6885). Eggs deposited in late winter or spring (Ref. 6885).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Các nghề cá: Tính thương mại; Bể nuôi cá: Bể cá công cộng
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Estimates based on models
Preferred temperature (Ref.
123201): 4.1 - 10.8, mean 7.1 °C (based on 212 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6289 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00241 - 0.01255), b=3.15 (2.95 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 4.1 ±0.68 se; based on food items.
Thích nghi nhanh (Ref.
120179): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (tm=1).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
