Here brown trout swim with brook trout.
Brown trout are olive to dark brown with rust red spots on top and yellow to white below.
There are no spots on this species's tail and paired fins. The fish at the forefront of this image is a brown trout. Notice the brook trout in this image with the bright, rosy pink belly. These are the colors of the breeding male, golden on the sides and a bright orange to scarlet on the bottom. A native of Europe, northern Africa, and western Asia, the brown trout was introduced to North America in 1883 in New York and Michigan.