What Kind of Trout Are in Colorado?

Colorado is a paradise for trout anglers with numerous rivers, streams, and lakes that are home to a variety of trout species. In this article, we will discuss the different types of trout that you can find in Colorado.

Brown Trout

Brown trout is one of the most popular species of trout found in Colorado. They have an olive-brown back with yellowish-brown sides and are covered with black spots.

Brown trout can be found in cold and clear mountain streams and rivers across the state. These fish grow to impressive sizes in Colorado waters, with some reaching up to 20 inches or more.

Rainbow Trout

Rainbow trout is another popular species of trout found in Colorado. They are known for their brightly colored skin, which ranges from pink to red on their sides and back, and they have a characteristic pink stripe down their side. Rainbow trout prefer cold water temperatures and can be found in high elevation streams and lakes across the state.

Brook Trout

Brook trout is a smaller species of trout that is native to many parts of North America, including Colorado. They have a dark green back with light-colored spots and a distinctive red belly. Brook trout prefer cold water temperatures and can be found in small creeks and streams throughout the state.

Cutthroat Trout

Cutthroat Trout is another native species of Colorado that has been around for centuries. These fish have distinct red slashes under their jaws which give them their name cutthroat. Cutthroat Trout prefers colder waters that are well-oxygenated such as high mountain streams or lakes.

Lake Trout

Lake Trout also known as Mackinaw, is one of the largest freshwater fish in North America that resides in deep mountain lakes including those at higher elevations around Colorado. Lake Trout can grow very large as compared to other trout species. They can grow up to 3 feet long and weigh up to 30 pounds.


In conclusion, Colorado offers a diverse range of trout species, each with its unique characteristics and habitat requirements. Whether you are a seasoned angler or a novice just starting, there is always something new and exciting to discover when it comes to trout fishing in Colorado. So grab your fishing gear and head out to one of Colorado’s many streams, rivers or lakes for an unforgettable fishing experience.

Photo of author

Michael Allen