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Brown trout (Salmo trutta)—Treat DavidsonThe National Audubon Society Collection/Photo Researchers
Prized and wary European game fish (Salmo trutta, family Salmonidae) that is favoured for food. The species includes several varieties (e.g., the Loch Leven trout of Britain). The brown trout is recognized by the light-ringed black spots on its brown body. It has been transplanted to many areas of the world because it can thrive in warmer waters than most other trout. It grows to about 8 lbs (3.6 kg). Oceangoing individuals, called sea trout, are larger than freshwater forms and provide good sport, as do those that enter large lakes.
This entry comes from Encyclopædia Britannica Concise. For the full entry on brown trout, visit Britannica.com.