Species learning profile
Alaska pollock
Gadus chalcogrammus
Alaska pollock (Gadus chalcogrammus) is a saltwater fish associated with open ocean habitat in North Pacific. Huge schools support one of the world's largest fisheries.
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At a glance
- 水域
- 海水
- Habitat
- 远洋
- 最大长度
- 91 cm
- 分布范围
- North Pacific
- 科
- Gadidae
- 目
- Gadiformes
Observe
How to identify Alaska pollock
- Huge schools support one of the world's largest fisheries.
- Guide context: open ocean habitat in North Pacific.
- Reported maximum length: 91 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 open ocean habitat across North Pacific. With little fixed shelter, currents, temperature fronts, depth, and moving prey define its open-ocean world.
Behavior
Forms dense midwater schools
Food-web connections
What it eats and why it matters
Diet
Krill, fish, and crustaceans.
Ecological role
A foundational prey and predator in the North Pacific.
Remember
One fact worth keeping
Alaska pollock可长到约 91 厘米，常见于远洋附近。
Think like a conservationist
A conservation lens
Wide-ranging ocean fish can cross many jurisdictions, so bycatch, harvest limits, and international cooperation matter.
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 Alaska pollock 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