The brown trout was introduced to America from Europe. It is now widely distributed in lakes and streams throughout Wyoming. In streams, brown trout prefer dense cover, particularly overhead cover from undercut banks and vegetation.
Brown trout are slightly more tolerant of high water temperatures than other trout.
The brown trout is a fall spawner. Like most trout, young browns feed on aquatic insects, crustaceans, and plankton in lakes and reservoirs. Brown trout over twelve inches usually prefer larger food items such as small fish and crayfish. Fish over ten pounds are not uncommon, and fish over twenty pounds have been taken from the North Platte River and Flaming Gorge Reservoir. The current state record from Flaming Gorge is 25.81 pounds, though fish over thirty pounds have been taken by anglers on the Utah end of the reservoir.