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.

Two major forks of this grayling stream come together in this pretty pool.

From the Chena River in Alaska

Stream photos

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Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington

This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.

11 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.

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Troutnut

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Troutnut on Sep 20, 2006September 20th, 2006, 8:35 am EDT

One of our registered users was recently having some problems logging in, and getting a "password wrong" error even though he had the right password. Since this is a new system and I'm still working out the kinks, I wonder if maybe this has happened to anyone else.

I have a way to manually fix accounts in the meantime. So if you can't log in, email jason@troutnut.com and I'll set you up.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist