Brook Trout
Salvelinus fontinalis
Record Weight
14 lbs 8 oz
Nipigon River, Ontario
Average Size
0.25-2 lbs
Preferred Temp
45°-60°F
Lifespan
3-8 years
Fight Rating
3/5
Taste Rating
5/5
Identification
Brook trout are among the most beautifully colored freshwater fish. Their backs are dark olive-green with distinctive worm-like vermiculations (wavy markings). The flanks display red spots with bright blue halos. The lower fins are strikingly marked with a white leading edge followed by a black stripe and then orange or red coloring. During spawning, males develop vivid orange-red bellies.
Habitat & Behavior
Brook trout require cold, clean, well-oxygenated water and are typically found in small headwater streams, spring-fed creeks, and cold mountain lakes. They are sensitive to water quality and cannot tolerate temperatures much above 68 degrees Fahrenheit for extended periods. Their presence is often used as an indicator of high water quality and healthy aquatic ecosystems.
Brook trout are less wary than brown trout and more willing to strike at a variety of offerings, making them an excellent species for beginning fly anglers. They tend to hold in pocket water behind rocks, in small plunge pools, and under overhanging vegetation. Brook trout are fall spawners, building redds in areas with upwelling groundwater. They are competitive feeders and will aggressively defend feeding territories.
Best Techniques
Best Baits & Lures
- Royal Wulff dry fly
- Adams dry fly
- Elk Hair Caddis
- Prince Nymph
- small spinners
- nightcrawler pieces
- live wax worms
- Panther Martin spinner
Seasonal Patterns
SpringSpring Fishing
Spring is prime brook trout season as snowmelt fills mountain streams and warming water temperatures activate insect hatches. Fish become increasingly aggressive feeders after the lean winter months. Early-season nymphing transitions to exciting dry fly fishing as hatches intensify in April and May.
SummerSummer Fishing
Brook trout remain active through summer in streams cold enough to stay within their thermal tolerance. Fishing is best in early morning and evening, especially during terrestrial insect season. Seek out spring-fed tributaries and shaded headwater streams where water stays cold enough for brook trout to thrive.
FallFall Fishing
Fall spawning brings brook trout into their most brilliant coloration. Males develop vivid orange bellies and become aggressive toward intruders near their redds. While fishing near active spawning areas should be avoided to protect reproduction, pre-spawn fish feed heavily to build energy reserves and are highly catchable.
WinterWinter Fishing
Brook trout slow down considerably in winter but will still feed on small nymphs and midges drifting through deep pools. In some states, winter fishing is closed on brook trout waters to protect the species. Where open, slow presentations with tiny nymphs fished deep produce occasional hookups on warmer afternoons.
State Records
Tips & Fun Facts
- Brook trout are not actually trout at all — they are char, more closely related to Arctic char and lake trout than to brown or rainbow trout.
- Brook trout can hybridize with brown trout to produce "tiger trout," which are sterile but grow quickly and display striking tiger-stripe markings.
- The world record brook trout of 14 lbs 8 oz was caught in 1915 from the Nipigon River in Ontario, Canada — a record that has stood for over a century.
- Brook trout can survive being frozen into ice in shallow pools and resume activity when the ice thaws, thanks to antifreeze proteins in their blood.
- Many eastern brook trout populations are now limited to tiny headwater streams because introduced brown and rainbow trout have outcompeted them in larger downstream waters.