Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
Biển gần đáy; Mức độ sâu 0 - 366 m (Ref. 2850). Subtropical; 58°N - 28°N, 136°W - 112°W
Eastern Pacific: Sitka, Alaska to Magdalena Bay, southern Baja California, Mexico. Records from areas south of Baja California and in the Gulf of California are in error. Two populations exist, one from Oregon northward and the other from San Francisco southward (Ref. 2850).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Chín muồi sinh dục: Lm ? range ? - ? cm
Max length : 38.0 cm TL con đực/không giới tính; (Ref. 2850)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 2; Các vây lưng mềm (tổng cộng) : 33 - 37; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 30 - 35; Động vật có xương sống: 42 - 46. Caudal fin rounded and narrow; pectorals broad (Ref. 6885). Olive brown to bronze or dark iridescent purple on dorsal surface, paler on sides with a golden yellow on ventral surface; white space under eye with a black crescent below; white on posterior edge of maxillary; young with a weak dark dorsal saddle (Ref. 6885). Branchiostegal rays: 6 (Ref. 36489).
Body shape (shape guide): elongated.
Ranges from intertidal areas (where they may remain out of water under rocks or seaweeds, Ref. 31184) to deeper water over sand and mud bottoms (Ref. 4925). Adults make vertical migrations at night (Ref. 6885). Feed on crustaceans and fishes (Ref. 6885). Oviparous with eggs and larvae attached to nest wall (Ref. 36489). Nest is guarded by male (Ref. 36489). Important prey item for seals and sea lions (Ref. 2850). Adults breathe air when out of water (Ref. 31184). Possess photophores which are arranged on the underside of the head in a 'U' fashion.
Nests are cavities that are formed under rocks and eggs are deposited on the roof of the cavity. As few as 19 or as much as 789 eggs have been found attached in a nest. Eggs are guarded by the fasting male. Probably polygamous (Ref. 6885).
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 2025-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Tài liệu tham khảo
123201): 6.9 - 16.8, mean 8.3 °C (based on 78 cells).
Phylogenetic diversity index (Tài liệu tham khảo
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00338 - 0.01026), b=3.14 (2.98 - 3.30), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Mức dinh dưỡng (Tài liệu tham khảo
69278): 4.0 ±0.67 se; based on food items.
Thích nghi nhanh (Tài liệu tham khảo
120179): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (tm=3.5; tmax=7).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (28 of 100).
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Nutrients (Ref.
124155): Calcium = 81.9 [43.9, 161.7] mg/100g; Iron = 1.11 [0.65, 1.89] mg/100g; Protein = 17.8 [16.8, 18.8] %; Omega3 = 0.322 [0.190, 0.553] g/100g; Selenium = 36.1 [18.1, 78.3] μg/100g; VitaminA = 24 [8, 72] μg/100g; Zinc = 0.668 [0.466, 0.959] mg/100g (wet weight);
