Canada country information

Common names: Blueback, Coho, Coho salmon
Occurrence: native
Salinity: freshwater
Abundance: occasional (usually not seen) | Ref: Page, L.M. and B.M. Burr, 2011
Importance: commercial | Ref: Coker, G.A., C.B. Portt and C.K. Minns, 2001
Aquaculture: commercial | Ref:
Regulations: restricted | Ref: Fisheries Branch, 1994
Uses: gamefish: yes;
Comments: Native to the Yukon Territory and British Columbia; introduced into other provinces (Ref. 52559), from Northwest Territories (Ref. 58426) to Québec (Ref. 52559). Occurs in the Great Lakes (Ref. 119192). Also Ref. 2850, 4925, 27436, 86798, 95479, 119194, 125578. Status of threat: 1). Interior Fraser River population: endangered. Criteria: 1,2,3,4; and 2). Lower Columbia River population: threatenened. Criteria: 1,2,3,4 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ca.html
National Fisheries Authority: http://www.ncr.dfo.ca/home_e.htm
Occurrences: Occurrences Point map
Main Ref: Scott, W.B. and E.J. Crossman, 1973
National Database:

Common names from other countries

Saumon argenté, Salmón plateado, Кижуч, ... more

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Etymology: Oncorhynchus: Greek, onyx, -ychos = nail + Greek, rhyngchos = snout (Ref. 45335); kisutch: Most probably a typo in the emendada p720 for kisutch, which is the vernacular name of this fish in Kamtchatka (Ref. 1998).
More on author: Walbaum.

Environment: milieu / climate zone / depth range / distribution range Écologie

marin; eau douce; saumâtre; anadrome (Ref. 51243); profondeur 0 - 250 m (Ref. 50550). Subtropical; 0°C - 25°C (Ref. 35682); 72°N - 22°N, 135°E - 111°W (Ref. 117423)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

North Pacific: distributed from the Anadyr River in Russia south towards Hokkaido, Japan, and from Point Hope in Alaska southwards to Chamalu Bay in Baja California, Mexico.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 108 cm TL mâle / non sexé; (Ref. 40637); 65.5 cm (female); common length : 71.0 cm TL mâle / non sexé; (Ref. 593); common length :59.5 cm (female); poids max. publié: 15.2 kg (Ref. 40637); âge max. reporté: 5 années (Ref. 36794)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 9 - 13; Épines anales: 0; Rayons mous anaux: 12 - 17; Vertèbres: 61 - 69. Characterized by the presence of small black spots on the back and on the upper lobe of the caudal fin, and by the lack of dark pigment along the gum line of the lower jaw (Ref. 27547). The gill rakers are rough and widely spaced; the lateral line is nearly straight (Ref. 27547). The adipose fin is slender; the pelvic fins have an axillary extension (Ref. 27547). Fish in the sea are dark metallic blue or greenish on the back and upper sides, a brilliant silver color on middle and lower sides, and white below; small black spots are present on the back and upper sides and on the upper lobe of the caudal fin (Ref. 27547). During the spawning season fish turn dark to bright green on head and back, bright red on the sides, and often dark on the belly (Ref. 27547). Females are less brightly colored than males (Ref. 27547).

The fish occur in the ocean or in lakes; adults return to the rivers where they were born (Ref. 27547). The young fish emerge in springtime and they usually live in fresh water for 1-2 years (sometimes up to 4 years, Ref. 27547); later they migrate at night to freshwater lakes or to the sea (Ref. 1998). Epipelagic (Ref. 58426). The fish that stay more than two years in fresh water and become sexually ripe without ever going to sea, are called residuals; they never spawn (Ref. 27547). Young fish in lakes and rivers eat mainly insects; they stay almost entirely in deep parts of the river and soon become strongly territorial (Ref. 27547). Upon reaching the sea, the smolts remain close to the coast for a certain time, eating planktonic crustaceans (Ref. 27547). As they grow, they migrate farther out into the sea and hunt larger organisms (Ref. 27547) such as jellyfish, squids and fishes (Ref. 58426). They are hunted by various fishes, birds (mergansers, loons and kingfishers), mammals and lampreys (Ref. 1998). This kind is traded as fresh fish, dried or salted, smoked, canned, preserved and frozen (Ref. 9988). They are steamed, grilled, broiled, cooked in the microwave and baked (Ref. 9988).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Adults migrate from the sea or lake, school at mouths of rivers, and move upstream when rains increase river flow (Ref. 1998). As a rule, the winter entries (December and January) occur in the southern part of the range, with appearance in fresh water becoming progressively earlier to the north (Ref. 30381, 30382, 30383). At the spawning area, the female finds a spot and digs a pitt. At this point she is aggressive toward other females. While digging, an attendant male courts her or is busy driving away other males. As soon as the pitt is completed, the female drops into it and is immediately followed by the male. The pair are side by side, they open their mouth, quiver and release egg and sperm (Ref. 27547). At this point, other males move in and release sperm into the nest (Ref. 1998). The female quickly moves to the upstream edge of the nest and starts digging a new pitt, covering the eggs. The whole process is repeated for several days until the female deposits all her eggs. The male then leaves and may seek another female. The spent female usually continues to dig, until she dies (Ref. 27547). Reproductive strategy: synchronous ovarian organization, determinate fecundity (Ref. 51846).

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Non évalué

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: hautement commercial; Aquaculture: commercial; pêche sportive: oui

FAO(Aquaculture systems: production, Résumé espèce; pêcheries: production, Résumé espèce; publication : search) | FishSource | Sea Around Us

Plus d'informations

Trophic ecology
Éléments du régime alimentaire
Diet compositions
Food consumptions
Food rations
Prédateurs

Ecology
Écologie
Home ranges

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Fréquences de longueurs
Mass conversions
Recruitments
Abundances

Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larves
Dynamique des populations larvaires

Distribution
Pays
Zones FAO
Écosystèmes
Occurrences
Introductions
BRUVS - Videos

Anatomy
Gill areas
Cerveaux
Otolithes

Physiology
Body compositions
Nutrients
Oxygen consumptions
Type de nage
Swimming speeds
Visual pigment(s)
Sons de poissons
Diseases / Parasites
Toxicities (LC50s)

Genetics
Génétique
Electrophoreses
Heritabilities

Human related
Aquaculture systems
Profils d'aquaculture
Souches
Ciguatera cases
Stamps, coins, misc.

Outreach
Collaborateurs

Taxonomy
Noms communs
Synonymes
Morphologie
Morphométrie
Images

References
Références

Outils

Articles particuliers

Maintenance en aquarium | Articles sur l'espèce | Rapports d'aquaculture

Télécharger en XML

Page de résumé | Coordonnées géographiques | Noms communs | Photos

Sources Internet

Estimates based on models

Preferred temperature (Ref. 115969): 1 - 8.9, mean 3.9 (based on 453 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01047 (0.00482 - 0.02276), b=3.04 (2.87 - 3.21), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 4.2 ±0.70 se; based on food items.

Résilience (Ref. 120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.98(?); tm=2-4; Fec=1,400).

Prior r = 0.32, 95% CL = 0.21 - 0.48, Based on 2 full stock assessments.

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (52 of 100).

Climate Vulnerability (Ref. 125649): High to very high vulnerability (72 of 100).

Catégorie de prix (Ref. 80766): Medium.

Oncorhynchus kisutch (Walbaum, 1792)