The halfback is a popular stonefly pattern throughout Colorado and Wyoming.

The Hare's Ear is a classic nymph pattern, enormously popular as a great 'All-Around' fly. The Hare's Ear imitates a multitude of insects rather well.

The Renegade is a timeless fly still popular on lakes and rivers. Available in a variety of sizes, it is most used to imitate midges and clusters.

The Renegade is a timeless fly still popular on lakes and rivers. Available in a variety of sizes, it is most used to imitate midges and clusters.

The Black Stonefly pattern is particularly popular during early spring hatches.

While the Tellico nymph's origins lie in the east, it is still a great trout fly here in the West as well.

The Zug Bug has a peculiar similarity to the Prince Nymph, but is easily recognized through its significant amount of peacock herl. Typically used as a Caddis imitation.

Scuds are most used to imitate fresh water crustaceans, and are available in a variety of colors.

A streamer version of the classic Royal Coachman pattern.

The Helgramite lives up to its name, as it mimics dobsonfly larvae, which are commonly referred to as hellgrammite.

The Hornberg is a kind of multi-use fly that can be fished as a dry fly and a streamer.

The Egg Sucking leech is a good alternative streamer to the more famous Wooly Bugger. Its bright head tends to be particularly attractive in murky and muddy waters along lakes and rivers.

The Muddler Minnow is an impressively popular streamer pattern around the world, that mimics a number of species.

The Platte River Special is a popular streamer pattern, particularly in Wyoming on the Upper North Platte.

The Matuka fly imitates small fish and leeches, and finds success with trout and many other species of fish.

The Wooly Bugger is easily one of the most popular flies in the world. It imitates small fish and leeches, and comes in a number of variations.

Used as a streamer to imitate various species of trout based on its specific color scheme.

This female version of the popular Adams fly is distinct in appearance by a strip of yellow to imitate the presence of an egg sack.

This version of the popular Adams fly is characterized by the use of Grizzly hackle in tying the pattern.

Easily one of the most popular flies in the world, the Parachute Adams is often argued as to be one of the best all-around trout flies. It is used by fly fisherman from every corner of the trout fishing community, beginners and experts alike.

Ants are incredibly popular terrestrials and are often found on the water as an enticing meal for a number of fish.

The Elk-Hair Caddis is an immensely popular fly, used to imitate a caddis fly, Caddis flies are among the most popular across the entire United States, and this dry-pattern is easily one of the most easily recognized due to its success across many regions.

The bivisible is a classic trout fly that finds its use throughout the fly-fishing community.