The rainbow trout is also the most common type of trout, which come in many varieties, including golden, steelhead, cutthroat, brown, brook and lake, to name a few.
A closer look at the most popular species of trout fly fishermen pursue:
Rainbow Trout
The rainbow trout (Oncorhynchus mykiss) is favored by fly fishermen because of its beautiful coloration – for which it is named – and fighting ability.
Wild trout typically have olive-colored backs and tails that peppered with dark spots and silvery sides that look as if they’ve been painted with pink to crimson watercolors.
Brown Trout
The brown trout isn't exactly native to Northern America, but it's one of the most popular fish among American fly fishermen.
Brown trout (Salmo trutta) are considered native to Europe and Asia and can be identified by their brownish coloring and pink spots on the side and back.
Golden Trout
The state fish of California, golden trout have a radiant color scheme that begins with an olive back that blends into a blazing crimson lateral stripe and golden belly that rival the hue of any freshwater fish in North America.
On top of their beauty, these little fish can fight. And when anglers finally land one, they're usually surprised at their size. Most goldens run from 7- to 12-inches long.
The California record is over 9 pounds, but anything over a pound earns bragging rights in the backcountry lakes and streams where the few natives remain.
Steelhead Trout
Steelhead. Sea-run trout. Call them what you want, these silver beasts are among the best fighters you'll ever tussle with in a freshwater stream -- if you can find them.
Steelhead are an elusive species because of the harsh winter conditions they thrive in along with the unpredictable cycle of the spawn.
