Species learning profile
虹鱒
Oncorhynchus mykiss
Rainbow trout (Oncorhynchus mykiss) is a freshwater fish associated with river habitat in Global. Its colors vary with habitat and breeding season.
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At a glance
- 水域
- 淡水
- Habitat
- 河流
- 最大长度
- 120 cm
- 分布范围
- 全球
- 科
- Salmonidae
- 目
- Salmoniformes
Observe
How to identify 虹鱒
- Silvery with a pink stripe and dark spots.
- Streamlined, with a soft fin near the tail.
- Reported maximum length: 120 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 Global. Flow, seasonal floods, connected side channels, and access to spawning reaches all shape its river habitat.
Behavior
Uses river habitat for feeding, shelter, migration, or reproduction.
Food-web connections
What it eats and why it matters
Diet
Aquatic insects, crustaceans, and fish, changing with age and habitat.
Ecological role
It participates in a connected river food web where nutrients and animals move both upstream and downstream..
Remember
One fact worth keeping
虹鱒可长到约 120 厘米，常见于河流附近。
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 Rainbow trout 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