Species learning profile
Chinook salmon
Oncorhynchus tshawytscha
Chinook salmon (Oncorhynchus tshawytscha) is a freshwater fish associated with river habitat in North Pacific. The largest Pacific salmon can cross thousands of kilometres of ocean before returning to spawn.
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At a glance
- المياه
- مياه عذبة
- Habitat
- نهر
- أقصى طول
- 150 cm
- النطاق
- North Pacific
- الفصيلة
- Salmonidae
- الرتبة
- Salmoniformes
Observe
How to identify Chinook salmon
- The largest Pacific salmon can cross thousands of kilometres of ocean before returning to spawn.
- Guide context: river habitat in North Pacific.
- Reported maximum length: 150 cm — capable of growing longer than many people are tall. Maximum is not the same as typical adult size.
Field note: color, size, and markings can change with age, sex, season, depth, and lighting. Use several traits together.
Place and pattern
Where it lives—and how it behaves
Habitat and range
This species is associated with river habitat across North Pacific. Flow, seasonal floods, connected side channels, and access to spawning reaches all shape its river habitat.
Behavior
Migrates between rivers and the open ocean
Food-web connections
What it eats and why it matters
Diet
Small fish, squid, and crustaceans.
Ecological role
Moves marine nutrients into river and forest food webs.
Remember
One fact worth keeping
قد يصل طول Chinook salmon إلى نحو 150 سم، ويوجد غالبًا قرب نهر.
Think like a conservationist
A conservation lens
River fish depend on connected water. Dams, blocked migrations, pollution, and altered flow can matter even when the channel still looks wet.
This habitat lens is not a current population-status assessment. Status can differ among regions and change as new assessments are published; follow the reference links and local fisheries or wildlife agencies for current decisions.
Recall
Quick knowledge check
Which habitat is most closely associated with Chinook salmon in this guide?
Keep exploring
References and further reading
Fishdle summarizes stable identification and ecology concepts in plain language. Taxonomy and population knowledge continue to change, so use primary assessments and regional authorities for conservation or management decisions.
Make connections