Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

This little pool in update New York is enjoyed by many tourists every day, and it still holds a few trout -- stockers mostly, but you can't complain about the setting!

From Mystery Creek # 62 in New York

Stream photos

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Sweltsa (Sallfly) Stonefly Nymph Sweltsa (Sallfly) Stonefly Nymph

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This species was fairly abundant in a February sample of the upper Yakima.

10 Recently Added Photos

27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Dinking around on a small stream

By Troutnut on September 28th, 2020

On September 29th I went up to the mountains to sight in my hunting rifle in advance of deer season. However, the custom ammunition I ordered was the wrong length and wouldn't fit into the chamber, so that job ended quickly. (I won't name the company, because they bent over backward to make it right, and I got it fixed by hunting season.) As a consolation prize to make the trip productive, I drove to a nearby stream and played with the colorful little rainbows and cutthroat trout on perdigon nymphs. As a bonus, I caught a striking and unusual species of Siphlonurus mayfly.

Photos by Troutnut from Mystery Creek #249 in Washington

Closeup insects by Troutnut from Mystery Creek #249 in Washington

Female Siphlonurus autumnalis (Gray Drake) Mayfly Spinner

8 Pictures

Lateral view of a Female Siphlonurus autumnalis (Siphlonuridae) (Gray Drake) Mayfly Spinner from Mystery Creek #249 in Washington

I found this specimen and saw a few more of its kind during midday on a small, steep, rocky creek fairly high in the Cascades, different from the previously reported habitats of its species.

Collected September 28, 2020 from Mystery Creek #249 in Washington

Added by Troutnut on November 10, 2020

Collected September 28, 2020 from Mystery Creek #249 in Washington and added by Troutnut on November 10, 2020