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.

Neversink Gorge (Wolf Brook) in New York

Stream photos

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Isoperla (Stripetails and Yellow Stones) Stonefly Adult Isoperla (Stripetails and Yellow Stones) Stonefly Adult

Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Mystery Creek #308 in Washington

9 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.

Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner Pictures

I only caught a couple of these, and they were both females, so I'm not sure I'll be able to identify it any further.

Lateral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Dorsal view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Ventral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Ruler view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin The smallest ruler marks are 1 mm.

This mayfly was collected from Devil's Creek in Wisconsin on June 14th, 2021 and added to Troutnut.com by Troutnut on June 21st, 2021.

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