Home · Salmonidae · Bull trout
Bull trout (Salvelinus malma) — Salmonidae

Bull trout

Salvelinus malma
Family: Salmonidae
LC · Least Concern

The Bull trout (Salvelinus malma) is a fish that lives in both fresh and salt water of the family Salmonidae that grows up to 127 cm.

Length
127 cm
Water
Euryhaline
Depth
0.0–200.0 m
Diet
Carnivore
Behaviour
Small groups
Body shape
Torpedo-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
North Pacific, from Japan and Korea to Alaska and the northwest of the United States.
Edibility
Commonly eaten

Want the complete picture on the Bull trout?

Get the app

Description

The Dolly Varden is a salmonid char of the family Salmonidae from the North Pacific. The species has a streamlined, dark body with numerous pale pink to orange spots and can reach about 1.3 m. It inhabits very clear, cold mountain streams, rivers, lakes and the sea. The species is typically anadromous, but many populations live their whole lives in fresh water. Adults migrate upstream in autumn and spawn in spring. The diet consists of insects, snails, fish eggs and fishes. The species is a prized sport and food fish.

Frequently asked questions

How do you recognise the Bull trout?

The Bull trout has a torpedo-shaped body, is mainly brown and shows a spots pattern. Char with pale pink-orange spots; usually anadromous, but many populations stay in fresh water.

Where does the Bull trout live?

The Bull trout lives in both fresh and salt water and is mostly found around mixed bottom. North Pacific, from Japan and Korea to Alaska and the northwest of the United States.

How big does the Bull trout get?

The Bull trout grows to a maximum of about 127 cm. On average the species is around 38 cm.

Is the Bull trout dangerous to humans?

No, the Bull trout is harmless to humans. None required: this species is harmless to humans.

Is the Bull trout edible?

Yes, the Bull trout is commonly eaten.

More photos

Bull trout (Salvelinus malma) — Salmonidae — 2
iNaturalist ((c) akira_jp, some rights reserved (CC BY-NC))
Bull trout (Salvelinus malma) — Salmonidae — 3
iNaturalist ((c) Maria Krausmann, some rights reserved (CC BY-NC))
Bull trout (Salvelinus malma) — Salmonidae — 4
iNaturalist ((c) luj333, some rights reserved (CC BY-NC))
Fin

Want the complete picture on the Bull trout?

Point your camera at the fish and Fin names the species in seconds. Free, and the Bull trout is one of 12,519 species in the app.

Get the app →

All data

Identification

English name
Bull trout verified
Scientific name
Salvelinus malma
Family
Salmonidae
Other names
Dolly varden; Pacific brook char; Dolly varden char; Dolly varden charr; Miyabe charr; Pacific brook trout; Red spotted char; Red spotted trout; Redspotted Rocky Mountain trout; Salmon-trout; Sea trout; Sea char verified

Appearance

Size class
Extra large verified
Max length (cm)
127.0 verified
Average length (cm)
37.5 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Spots inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Euryhaline sourced
Substrate
Mixed bottom sourced
Min depth (m)
0.0 verified
Max depth (m)
200.0 verified
Natural range
North Pacific, from Japan and Korea to Alaska and the northwest of the United States. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Insects, snails, fish eggs and fishes sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Migrates upstream in autumn and spawns in spring. inferred
Special features
Char with pale pink-orange spots; usually anadromous, but many populations stay in fresh water. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Caught in sport angling and small-scale commercial fishing. sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Salvelinus

More from the family Salmonidae

Fin

Want the complete picture on the Bull trout?

Point your camera at the fish and Fin names the species in seconds. Free, and the Bull trout is one of 12,519 species in the app.

Get the app →
Is this the Bull trout? Get the app