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Black-spotted game fish (Salmo clarki) of the salmon family, found in western North America. The cutthroat trout is named for the bright red streak beneath its lower jaw. Considered a good table fish, it strikes at flies, baits, and lures. It reaches a weight of 4 lb (1.8 kg). Many cutthroat trout that live in rivers migrate to sea. Like oceanic forms of other trout species, these fish are called sea trout and may not reenter freshwater for several years.
This entry comes from Encyclopædia Britannica Concise. For the full entry on cutthroat trout, visit Britannica.com.