RIVER FISH · Cold springs & headwaters
Brook trout
Salvelinus fontinalis
A native eastern char associated with cold spring-fed streams, ponds and clean gravel habitat.
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Meet the fish
- Habitat
- Small cold spring-fed streams and ponds with gravel or sand bottom, vegetation, cover and groundwater influence.
- On the menu
- Young fish begin on plankton and shift toward insects and other aquatic prey as they grow.
- Size context
- Size varies strongly by habitat; headwater fish may remain small while productive lakes and larger systems can grow much larger brook trout.
- Range & local context
- Native to much of eastern North America, with introductions creating populations outside parts of the original range.
Living with the river
Water & habitat
Cold water, groundwater, shade, clean gravel and flow stability are central. A warm reading at one station does not define an entire headwater network.
Seasonal life
Brook trout typically spawn in fall over gravel where groundwater or spring flow helps keep eggs supplied with cold oxygenated water.
Before you go
Native brook trout populations can be sensitive to warming, habitat loss and competition from introduced trout. Follow special wild-trout rules where they apply.
Use the linked agencies and the relevant river guide for current regulations, closures and consumption advisories. A species profile is not a fishing license or a statement that harvest is allowed.
Editorial review: . Regional size examples are labeled; maximum lengths are not typical sizes.
More river fish
Keep exploring species connected to the same river-guide network.