Species learning profile
Chum salmon
Oncorhynchus keta
Chum salmon (Oncorhynchus keta) is a freshwater fish associated with river habitat in North Pacific. Breeding adults develop dramatic purple and green bars.
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At a glance
- পানি
- মিঠা পানি
- Habitat
- নদী
- সর্বোচ্চ দৈর্ঘ্য
- 100 cm
- বিস্তৃতি
- North Pacific
- গোত্র
- Salmonidae
- বর্গ
- Salmoniformes
Observe
How to identify Chum salmon
- Breeding adults develop dramatic purple and green bars.
- Guide context: river habitat in North Pacific.
- Reported maximum length: 100 cm — up to about the length of a guitar. 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
Often spawns near the lower reaches of rivers
Food-web connections
What it eats and why it matters
Diet
Zooplankton, insects, and small fish.
Ecological role
Carries ocean-derived nutrients upstream.
Remember
One fact worth keeping
Chum salmon প্রায় 100 সেমি পর্যন্ত বড় হয় এবং সাধারণত নদী-এর কাছে থাকে।
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 Chum 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