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No image available for this species; drawing shows typical species in Salmonidae.
分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Salmoniformes (Salmons) 鮭形目 (Salmons) > Salmonidae (Salmonids) 鮭科 (Salmonids) > Coregoninae
Etymology: Coregonus:Greek, kore = pupils of the eye + Greek, gonia = angle (Ref. 45335). Eponymy: Edward William Nelson (1855–1934) was an outstanding American naturalist. [...] (Ref. 128868), visit book page. More on author: Bean.
North America: Probably restricted to northern Northwest Territories, Yukon Territory in Canada and Alaska in Yukon River, Paxson Lake, Copper River system, Anderson River and Mackenzie River delta. Hybridizes with Stenodus leucichthys, probably a result of simultaneous broadcasting of reproductive products in the same area; occasionally hybridizes with Coregonus sardinella (Ref. 27547). Belongs to the Coregonus clupeaformis complex (Ref. 27547). 北美洲: 可能侷限於西北地區北部了, 在育空河, Paxson 湖,銅河流域,安德遜河與麥肯茲河三角州的加拿大與阿拉斯加州的育空河一帶。 與 Stenodus leucichthys 雜交, 可能在相同的區域中的生殖產品的一個同時廣播的結果; 偶然地與 Coregonus sardinella 雜交。 (參考文獻 27547) 屬於 Coregonus clupeaformis 複合體。 (參考文獻 27547)
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm Max length : 56.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 5723)
背棘 (總數) : 0; 背的軟條 (總數) : 11 - 13; 臀棘: 0; 臀鰭軟條: 10 - 14; 脊椎骨: 60 - 63. Distinguished by the gill rakers that are longer than 20% of the interorbital width, a total of 22 to 27 gill rakers on the first arch (with modal counts of 24 or 25), and a pronounced hump behind the head in adults (Ref. 27547). Adipose fin well developed, often larger in males; axillary process present in pelvic fins (Ref. 27547). Dark brown to midnight blue above fading to silver on sides and wide beneath; no parr marks in young (Ref. 27547). Body shape (shape guide): fusiform / normal. 區別的特徵為鰓耙那是長度超過 20% 的眼間骨寬度, 總數為 22 到 27個鰓耙在第一個弓 (具有型計數 24 或者 25) 上, 與一個明顯的隆起在頭部後面當成魚時.(參考文獻 27547) 脂鰭發展良好的, 時常比較大的在雄性中; 腋窩的突起出現在腹鰭。 (參考文獻 27547) 深褐色的對褪成的暗藍色上方在側邊上銀色的與寬的之下; 當幼魚時的沒有幼鮭橫帶.(參考文獻 27547)
Occurs in small to large rivers (Ref. 5723). Rarely enters lakes (Ref. 5723). Makes fairly extensive upstream and downstream movements related to spawning runs (Ref. 27547). Feeds mainly on immature insects (Ref. 27547). Usually does not feed during the latter part of the spawning run (Ref. 27547). Excellent food fish but usually not eaten (Ref. 27547).
The spawning run involves an upward migration beginnning as early as late June. The spawning act occurs at night or during the day. A female begins to swim vertically toward the surface, belly upstream. A male (sometimes 2 or 3) joins her and eggs and milt are released as fish approach the surface. The fish break the surface, fall away from each other and return to the bottom. After spawning most move downstream. The young of the year move downstream during their first year and do not return until they are sexually mature. Generally, the same spawning grounds are utilized yearly (Ref. 27547).北美洲: 可能侷限於西北地區北部了, 在育空河, Paxson 湖,銅河流域,安德遜河與麥肯茲河三角州的加拿大與阿拉斯加州的育空河一帶。 與 Stenodus leucichthys 雜交, 可能在相同的區域中的生殖產品的一個同時廣播的結果; 偶然地與 Coregonus sardinella 雜交。 (參考文獻 27547) 屬於 Coregonus clupeaformis 複合體。 (參考文獻 27547)
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
系統發育多樣性指數 (參考文獻 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00266 - 0.01086), b=3.22 (3.06 - 3.38), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (參考文獻 69278): 3.5 ±0.43 se; based on food items.