分類 / Names
Common names from other countries
主要參考資料
大小 / 重量 / 年齡
Max length : 150 cm TL 雄魚/尚未辨別雌雄; (Ref. 40637); common length : 70.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 9258); 最大體重: 61.4 kg (Ref. 27547); 最大年齡: 9 年 (Ref. 12193)
Length at first maturity
Lm 82.2  range ? - ? cm
環境
; 海洋; 淡水; 半鹹淡水 底中水層性; 溯河洄游 (Ref. 51243); 深度上下限 0 - 375 m (Ref. 58426)
氣候 / 範圍
? - 25°C (Ref. 35682), preferred 4°C (Ref. 107945); 72°N - 27°N, 136°E - 109°W (Ref. 54251)
分布
Arctic, Northwest to Northeast Pacific: drainages from Point Hope, Alaska to Ventura River, California, USA; occasionally strays south to San Diego in California, USA. Also in Honshu, Japan (Ref. 6793), Sea of Japan (Ref. 1998), Bering Sea (Ref. 2850) and Sea of Okhotsk (Ref. 1998). Found in Coppermine River in the Arctic. Several countries report adverse ecological impact after introduction.
國家 | FAO區域 | 生態系 | 發現紀錄 | 簡介
簡短描述
背棘 (總數): 0; 背的軟條 (總數): 10-14; 臀棘 0; 臀鰭軟條: 13 - 19; 脊椎骨: 67 - 75. Distinguished by the small black spots on the back and on the upper and lower lobes of the caudal fin, and the black gums of the lower jaw (Ref. 27547). Body fusiform, streamlined, noticeably laterally compressed in large adults, somewhat deeper than other species (Ref. 6885). Gill rakers wide-spaced and rough; pelvic fins with axillary process (Ref. 27547). Fish in the sea are dark greenish to blue black on top of head and back, silvery to white on the lower sides and belly; numerous small, dark spots along back and upper sides and on both lobes of caudal; gum line of lower jaw black (Ref. 27547). In fresh water, with the approach of the breeding condition, the fish change to olive brown, red or purplish, the color change being more marked in males than in females (Ref. 27547).
人類使用
漁業: 高經濟性; 養殖: 商業性; 游釣魚種: 是的; 水族館: 公眾的水族館
工具
特別的報告
下載 XML
網路資源
Estimates of some properties based on models
Phylogenetic diversity index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
營養階層
4.4 ±0.7 se; Based on diet studies.
回復力
中等的, 族群倍增時間最少 1.4 - 4.4年 (tm=4; tmax=9; Fec=4,000)
瀕危性
High to very high vulnerability (68 of 100)
價格種類