Oncorhynchus clarkii, Cutthroat trout : fisheries, aquaculture, gamefish, aquarium

Oncorhynchus clarkii (Richardson, 1836)

Cutthroat trout
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Oncorhynchus clarkii   AquaMaps   Data sources: GBIF OBIS
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Oncorhynchus clarkii
Female picture by Bull. U.S. Bur. Fish.

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Lớp phụ (Subclass) cá vây tia > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Etymology: Oncorhynchus: Greek, onyx, -ychos = nail + Greek, rhyngchos = snout (Ref. 45335);  clarkii: Named after William Clark, leader of the Lewis and Clark expedition (Ref. 1998).  More on author: Richardson.

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

; Biển; Nước ngọt; Thuộc về nước lợ gần đáy; di cư biển sông (để đẻ trứng) (Ref. 27547); Mức độ sâu 0 - 200 m (Ref. 50610).   Temperate; ? - 23°C (Ref. 12741); 61°N - 40°N

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Point map | Những chỉ dẫn | Faunafri

Eastern Pacific: northern parts of Prince William Sound, Alaska, south to the Eel River in northern California, USA and is found in most streams emptying into the Pacific.

Widely introduced into various streams and lakes within its natural range, as well as into a few lakes in eastern North America. In some streams it may be the most numerous sport fish present, while other streams support only small populations. At least 14 subspecies have been historically recognized (Ref. 5723).

Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm ?, range 15 - 18 cm
Max length : 99.0 cm TL con đực/không giới tính; (Ref. 12204); Khối lượng cực đại được công bố: 18.6 kg (Ref. 9988); Tuổi cực đại được báo cáo: 10 các năm (Ref. 3221)

Short description Hình thái học | Sinh trắc học

Các tia vây lưng cứng (tổng cộng): 0; Các vây lưng mềm (tổng cộng): 8-11; Tia cứng vây hậu môn 0; Tia mềm vây hậu môn: 8 - 12. Color is variable. Generally dark green to greenish-blue on back, olive-green on upper flank, silvery on lower flank and belly; flanks spots below lateral line are more numerous anteriorly; irregular spots on dorsal, adipose and caudal fins and the anal, pectoral and pelvic fin bases; gill covers are pinkish. Those found at sea or recent migrants to freshwater are silvery with a bluish back, yellowish lower flanks and fins, and sparse spots.

Sinh học     Tự điển (thí dụ epibenthic)

Prefers relatively small streams, with gravel bottoms and gentle gradients. Spawning adults migrate from the sea into streams to spawn (Ref. 27547). The young fish usually stay in the stream for a year or two before entering the sea, but some populations never got to sea at all. In rare cases, some individuals of sea-going populations, may remain in fresh water for as long as eight years (Ref. 28866, 28869). Feeds on small fishes, crustaceans, and insects (Ref. 4925). The flesh is orange-red and of excellent flavor (Ref. 27547). Utilized fresh and eaten fried, broiled, and baked (Ref. 9988). This species does not compete well with other fish, tends to hybridize, and is unable to withstand fishing pressure = depletion of stocks.

Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng

Spawning occurs both daytime and nighttime. The female selects a site and builds a redd while the male courts her and drives away other males. Upon completion of the redd, the female settles into the pitt, immediately followed by the male. The pair releases eggs and sperm simultaneously and the eggs fall into the spaces between the gravel. The female then moves to the upstream edge of the redd and resumes digging, thereby covering the eggs. When completely covered, the female may use the new redd to spawn once more or she may look for another spot and repeat the entire process. Both males and females spawn with one or more members of the opposite sex (Ref. 12204, 27547). Reproductive strategy: synchronous ovarian organization, determinate fecundity (Ref. 51846).

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối | Người cộng tác

Coad, B.W., 1995. Encyclopedia of Canadian fishes. Canadian Museum of Nature and Canadian Sportfishing Productions Inc. Singapore. (Ref. 12204)

IUCN Red List Status (Ref. 123251)


CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Các nghề cá: Tính thương mại; Nuôi trồng thủy sản: Tính thương mại; cá để chơi: đúng; Bể nuôi cá: Bể cá công cộng
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Age/Size
Sự sinh trưởng
Length-weight
Length-length
Length-frequencies
Sinh trắc học
Hình thái học
Ấu trùng
Sự biến động ấu trùng
Bổ xung
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Các tài liệu tham khảo
Nuôi trồng thủy sản
Tổng quan nuôi trồng thủy sản
Các giống
Di truyền
Tần số alen
Di sản
Các bệnh
Chế biến
Mass conversion
Người cộng tác
Các tranh (Ảnh)
Stamps, Coins Misc.
Các âm thanh
Ngộ độc dạng ciguetera
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Vùng mang
Otoliths
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Estimates based on models

Preferred temperature (Ref. 115969): 6.1 - 9.7, mean 8.1 °C (based on 81 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00713 - 0.01166), b=3.02 (2.97 - 3.07), in cm total length, based on LWR estimates for this species (Ref. 93245).
Mức dinh dưỡng (Ref. 69278):  3.8   ±0.56 se; based on food items.
Generation time: 4.4 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Thích nghi nhanh (Ref. 120179):  Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (tm=2-3; tmax=10; Fec=226).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (48 of 100) .
Price category (Ref. 80766):   Very high.