溪鳟, also known as stream trout, is a freshwater fish belonging to the family Salmonidae. It is commonly found in cold, clear streams and rivers, primarily in North America and parts of Asia. This species is known for its vibrant colors and spots, which help it blend into its natural habitat. These fish are popular among anglers due to their fighting spirit and delicious taste. They typically feed on insects, small fish, and crustaceans. Conservation efforts are important for maintaining healthy populations of 溪鳟, as they are sensitive to changes in water quality and habitat destruction.