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Field Guide / Fish

Brook Trout

Salvelinus fontinalis

A jewel-colored char of cold, clean headwater streams, native to eastern North America and a sign of healthy water.

Illustration of a brook trout in side view, dark olive with pale wormlike back markings and red spots ringed in blue
Illustration for general reference. Individual fish vary in color and markings — always confirm identification before keeping a fish where size or species limits apply.
Type
Trout & Salmon
Water
Cold water
Habitat
Streams, Rivers, Lakes
Typical size
6 to 12 inches in most streams; larger fish live in some lakes and remote waters
Range
Native to eastern North America, from the Appalachians and Great Lakes to the Northeast and eastern Canada, and introduced in parts of the West.
Best seasons
Spring and fall; cool mornings and evenings in summer

How to identify it

  • Pale cream, wormlike markings cover the dark olive back and the dorsal fin.
  • Red spots surrounded by blue halos dot the sides.
  • The lower fins are orange-red with white leading edges bordered in black.
  • The tail is squared, and the belly of spawning males turns orange.

Often confused with

  • Brown Trout: red spots with halos but no wormlike back pattern, and no white-edged lower fins.
  • Lake Trout: a deeply forked tail and pale spots on a gray-green body, found in deep lakes.

Best baits and lures

  • Worms
  • Small spinners
  • Small spoons
  • Flies and nymphs
  • Salmon eggs

Techniques

  • Approach small streams quietly and cast to pocket water and pools
  • Drift worms or flies through riffles and pool heads
  • Fish small spinners across current seams
  • Release fish quickly, since brook trout are sensitive to warm water and handling

Fishing notes

Brook trout are technically a char, not a true trout, and they are the only trout native to much of the eastern United States. They need cold, clean, well-shaded water, and populations have declined where streams warm or silt up.

They are often eager biters in the small streams where they live, but they spook easily, so approach quietly and keep your shadow off the water.

Many native brook trout waters carry special rules, such as catch-and-release or single-hook limits, so check your regulations before you fish.

Related guides

Size limits, bag limits, legal baits, and seasons vary by state and waterbody and change over time. Check your state's current regulations — our state resources directory links straight to each state's official fishing rules and license portal.

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