Coho Salmon

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Coho Salmon

Oncorhynchus kisutch

In-depth Information Regarding this Species

U.S. Range in the Pacific Ocean Alaska to Baja (Eschmeyer and Herald 1983)

Habitat Estuaries and rivers (Emmett et al. 1991)

General Temperature Range (°C) Prefer water below 21 (Love 1996)

General Salinity Range (ppt) Anadromous (Eschmeyer and Herald 1983)

Average Maximum Overall Length (cm) 98 (Eschmeyer and Herald 1983)

Average Maximum weight (kg) Up to 14
Usually 2.7–5.4 (Eschmeyer and Herald 1983)

Overall Maximum Age (years) 5 (Love 1996)

Overall Age at Maturity (years) 2–4 (Eschmeyer and Herald 1983)

Type of Reproduction Gonochoristic, oviparous, semelparous (Emmett et al. 1991)

Fecundity 1,000–7,600
Asian and Alaskan populations lay more eggs (Love 1996)

Spawning Habitat Gravel (Love 1996)

Spawning Behavior Female makes nest
Parents die 3–24 days after spawning (Love 1996)

Time of Year of Spawning September–March (California)
November–January (British Columbia) (Love 1996)
September–February (peak in Columbia River) (Netboy 1980 in Emmett et al. 1991)

Habitat where Eggs are found Benthic, infaunal (Emmett et al. 1991)

Days to Hatch 42–84 (Love 1996)
38 at 11°C
48 at 9°C
86–101 at 4.5°C (Laufle et al. 1986 in Emmett et al. 1991)

Temperature for Egg Survival (°C) 4.4–21.0 (Bell 1984 in Emmett et al. 1991)
4.4–13.3 (optimal) (Reiser and Bjornn 1979 in Emmett et al. 1991)

Salinity for Egg Survival (ppt) Freshwater (Emmett et al. 1991)

Habitat where Larvae are found Stay under gravel for 14–70 days (Love 1996)
Benthic, infaunal (Emmett et al. 1991)

Salinity for Larval Survival (ppt) Freshwater (Emmett et al. 1991)

Length when Juvenile Settles out (cm) 3 (Gribanov 1948 in Emmett et al. 1991)

Temperature for Juvenile Survival (°C) 11.8–14.6 (Brett 1952 in Emmett et al. 1991)

Salinity for Juvenile Survival (ppt) In freshwater for one year (Eschmeyer and Herald 1983)
In freshwater for 1–3 years (Love 1996)

Juvenile Food Preference Insects, Small Fish (Love 1996)

Adult Food Preference Fish, Krill, Squid (Love 1996)

Commercial Fishery Major fishery
10% of total salmon catch in the North Pacific (Love 1996)

Sold Fresh or Frozen Fresh
Frozen (Emmett et al. 1991)

Style Species is Sold Some are canned (Emmett et al. 1991)

Additional Remarks Need well oxygenated water (Emmett et al. 1991)

Recent Wild Harvest Data for Oregon
Data from the Oregon Department of Fish and Wildlife

Year Total Catch
(Pounds) Ex-vessel Value
( U.S. Dollars)

1989
3,836,619

3,454,954

1990
1,041,908

1,381,662

1991
3,421,096

2,824,793

1992
446,454

410,281

1993
207,671

171,954

1994
488,886

403,594

1995
190,518

120,333

1996
216,444

132,961

1997
150,724

110,365

1998
193,806

121,913

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U.S. Range in the Pacific Ocean	Alaska to Baja (Eschmeyer and Herald 1983)
Habitat	Estuaries and rivers (Emmett et al. 1991)
General Temperature Range (°C)	Prefer water below 21 (Love 1996)
General Salinity Range (ppt)	Anadromous (Eschmeyer and Herald 1983)
Average Maximum Overall Length (cm)	98 (Eschmeyer and Herald 1983)
Average Maximum weight (kg)	Up to 14 Usually 2.7–5.4 (Eschmeyer and Herald 1983)
Overall Maximum Age (years)	5 (Love 1996)
Overall Age at Maturity (years)	2–4 (Eschmeyer and Herald 1983)
Type of Reproduction	Gonochoristic, oviparous, semelparous (Emmett et al. 1991)
Fecundity	1,000–7,600 Asian and Alaskan populations lay more eggs (Love 1996)
Spawning Habitat	Gravel (Love 1996)
Spawning Behavior	Female makes nest Parents die 3–24 days after spawning (Love 1996)
Time of Year of Spawning	September–March (California) November–January (British Columbia) (Love 1996) September–February (peak in Columbia River) (Netboy 1980 in Emmett et al. 1991)
Habitat where Eggs are found	Benthic, infaunal (Emmett et al. 1991)
Days to Hatch	42–84 (Love 1996) 38 at 11°C 48 at 9°C 86–101 at 4.5°C (Laufle et al. 1986 in Emmett et al. 1991)
Temperature for Egg Survival (°C)	4.4–21.0 (Bell 1984 in Emmett et al. 1991) 4.4–13.3 (optimal) (Reiser and Bjornn 1979 in Emmett et al. 1991)
Salinity for Egg Survival (ppt)	Freshwater (Emmett et al. 1991)
Habitat where Larvae are found	Stay under gravel for 14–70 days (Love 1996) Benthic, infaunal (Emmett et al. 1991)
Salinity for Larval Survival (ppt)	Freshwater (Emmett et al. 1991)
Length when Juvenile Settles out (cm)	3 (Gribanov 1948 in Emmett et al. 1991)
Temperature for Juvenile Survival (°C)	11.8–14.6 (Brett 1952 in Emmett et al. 1991)
Salinity for Juvenile Survival (ppt)	In freshwater for one year (Eschmeyer and Herald 1983) In freshwater for 1–3 years (Love 1996)
Juvenile Food Preference	Insects, Small Fish (Love 1996)
Adult Food Preference	Fish, Krill, Squid (Love 1996)
Commercial Fishery	Major fishery 10% of total salmon catch in the North Pacific (Love 1996)
Sold Fresh or Frozen	Fresh Frozen (Emmett et al. 1991)
Style Species is Sold	Some are canned (Emmett et al. 1991)
Additional Remarks	Need well oxygenated water (Emmett et al. 1991)

Year	Total Catch (Pounds)	Ex-vessel Value ( U.S. Dollars)
1989	3,836,619	3,454,954
1990	1,041,908	1,381,662
1991	3,421,096	2,824,793
1992	446,454	410,281
1993	207,671	171,954
1994	488,886	403,594
1995	190,518	120,333
1996	216,444	132,961
1997	150,724	110,365
1998	193,806	121,913