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Chum salmon (Oncorhynchus keta) — Salmonidae

Chum salmon

Oncorhynchus keta
Family: Salmonidae
LC · Least Concern
NativeIntroduced

The Chum salmon (Oncorhynchus keta) is a fish that lives in both fresh and salt water of the family Salmonidae that grows up to 100 cm.

Length
100 cm
Water
Euryhaline
Depth
0.0–250.0 m
Diet
Carnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Open water
Danger
Harmless
Range
North Pacific; anadromous: spawns in rivers of Northeast Asia and Northwest America and grows up in the open sea.
Edibility
Highly prized

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Description

The chum salmon is a large Pacific salmon of the family Salmonidae reaching about 1 metre. At sea it is streamlined and silvery, but spawning fish develop green flanks with purple-red, calico-like vertical bars; males grow a hooked lower jaw and large teeth. The species is anadromous: it grows up in the northern Pacific, where it eats zooplankton, small fish and squid, and migrates to spawn in the rivers of Northeast Asia and Northwest America. Like other Pacific salmon it spawns once and then dies. With its tasty flesh and roe (salmon caviar) it is one of the most important commercial salmon species in the world.

Frequently asked questions

How do you recognise the Chum salmon?

The Chum salmon has a torpedo-shaped body, is mainly silver-grey and shows a vertical stripes pattern. Large Pacific salmon; silvery at sea, but fish in breeding condition develop green and purple-red crackle-like bands and the males a hooked jaw.

Where does the Chum salmon live?

The Chum salmon lives in both fresh and salt water and is mostly found around open water. North Pacific; anadromous: spawns in rivers of Northeast Asia and Northwest America and grows up in the open sea.

How big does the Chum salmon get?

The Chum salmon grows to a maximum of about 100 cm. On average the species is around 58 cm.

Is the Chum salmon dangerous to humans?

No, the Chum salmon is harmless to humans. None required: this species is harmless to humans.

Is the Chum salmon edible?

Yes, the Chum salmon is a highly prized food fish.

More photos

Chum salmon (Oncorhynchus keta) — Salmonidae — 2
iNaturalist ((c) LJBRION, some rights reserved (CC BY-NC))
Chum salmon (Oncorhynchus keta) — Salmonidae — 3
iNaturalist ((c) Catie Clune, some rights reserved (CC BY))
Chum salmon (Oncorhynchus keta) — Salmonidae — 4
iNaturalist ((c) Kevin Brix, some rights reserved (CC BY-SA))
Fin

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All data

Identification

English name
Chum salmon verified
Scientific name
Oncorhynchus keta
Family
Salmonidae
Other names
Chum; Chum salmon; Dog salmon; Keta salmon; Calico salmon; Fall salmon; Keta; Qualla; Salmon; Summer chum verified

Appearance

Size class
Extra large verified
Max length (cm)
100.0 verified
Average length (cm)
58.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey sourced
Pattern
Vertical bars sourced
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Euryhaline verified
Substrate
Open water verified
Min depth (m)
0.0 verified
Max depth (m)
250.0 verified
Natural range
North Pacific; anadromous: spawns in rivers of Northeast Asia and Northwest America and grows up in the open sea. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
At sea zooplankton, small fishes and squid; no longer feeds during the spawning migration sourced
Social behaviour
Schooling verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
Yes verified
levensduur_max_jaar
7.0 verified
Seasonality
As an adult fish migrates from the sea up the rivers to spawn once and then dies; the juveniles migrate quickly to the sea. sourced
Special features
Large Pacific salmon; silvery at sea, but fish in breeding condition develop green and purple-red crackle-like bands and the males a hooked jaw. sourced

For anglers

Edibility
Highly prized verified
Fishing method
Caught commercially with nets and fished at river mouths; also a sport fish, mainly for the roe (salmon roe) sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Oncorhynchus

More from the family Salmonidae

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