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  3. Brook Trout

One of the 4 trout on WAnimals

Brook Trout (Salvelinus fontinalis)

Bony fish · Salmoniformes · Salmonidae

Brook Trout

Salvelinus fontinalis

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

Spotted something wrong?

Despite its common name it is not a true trout but a member of the genus Salvelinus. It was the first destination sport fish in 19th-century America.

Weight

300 g – 6.6 kg

Size

25 cm – 86 cm

Life expectancy

5 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Irregular activity

Active at irregular times, by day or night depending on circumstances.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Easy

Freshwater
39countries30parks3dive sites9same family

AI-generated images: illustrations, not photographs.

Fun facts

  • It eats insects and their larvae, zooplankton, small crustaceans and fish.
  • It lays its eggs in a redd, a gravel nest dug out by the female.
  • It lives in cold spring-fed streams and lakes of eastern North America.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (fish)
Habitat and environment
Cold spring-fed streams and lakes with sand and gravel beds in eastern North America; widely introduced on other continents
Birth weight
Tiny larva at hatching
Size at birth
Tiny larva at hatching
Sexual maturity
2 years
Gestation / incubation
The eggs incubate for 2-3 months buried in the gravel
Litter / clutch size
Hundreds of eggs laid in a redd, a gravel nest dug by the female

Sources consulted: Dimensions.com; Virginia DWR; AnAge; EBSCO; U.S. Fish and Wildlife Service; National Wildlife Federation; USGS NAS; Orvis News; BioKIDS

Where to find it

Best time: From September to November, during spawning, when the males take on intense colours and run up gravel-bedded streams.

Loading map…

Where to see it

Parks and dive sites where this species has been documented — showing 13 of 33.

Related species

Other species in the catalogue with the most in common with Brook Trout — same habitat, park, country, tags or family.

Same taxonomic family
Same taxonomic family
Same taxonomic family
Shares a park
Shares a park
Shares a park

Keep exploring

Based on what we already know about brook trout.

Comments

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See full glossary
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The pins mark the parks and dive sites where its presence is documented.

See its range on the interactive map→
EvergladesUnited States
Great Smoky MountainsUnited States
AcadiaUnited States
Mammoth CaveUnited States
Gros MorneCanada
FundyCanada
Point PeleeCanada
VoyageursUnited States
Isle RoyaleUnited States
CongareeUnited States
Fathom Five National Marine Park (Tobermory)Canada
Thunder Bay National Marine SanctuaryUnited States
Isle Royale National ParkUnited States
See all 30 parks
Chinook SalmonNot Evaluated

Chinook Salmon

Oncorhynchus tshawytscha

Rainbow TroutLeast Concern

Rainbow Trout

Oncorhynchus mykiss

SalmonLeast Concern

Salmon

Salmo salar

Least Concern

Longnose Gar

Lepisosteus osseus

Least Concern

Largemouth Bass

Micropterus salmoides

North American River OtterLeast Concern

North American River Otter

Lontra canadensis

CountriesUnited States
ParksEvergladesUnited States
TagsCarnivore
Carnivore
Variable activity
Solitary
Fish
Freshwater

Europe25

Africa4

Asia4

North America2

Oceania2

South America2

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