Species learning profile
Dolly Varden
Salvelinus malma
Dolly Varden (Salvelinus malma) is a freshwater fish associated with river habitat in North Pacific. Spawning adults develop bright spots against darkened sides.
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At a glance
- Água
- Água doce
- Habitat
- Rio
- Comprimento máximo
- 127 cm
- Distribuição
- North Pacific
- Família
- Salmonidae
- Ordem
- Salmoniformes
Observe
How to identify Dolly Varden
- Spawning adults develop bright spots against darkened sides.
- Guide context: river habitat in North Pacific.
- Reported maximum length: 127 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
Some populations migrate to coastal seas
Food-web connections
What it eats and why it matters
Diet
Insects, fish eggs, and small fish.
Ecological role
Recycles salmon eggs and carcass nutrients.
Remember
One fact worth keeping
Dolly Varden pode chegar a cerca de 127 cm e costuma viver perto de Rio.
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 Dolly Varden 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