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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.

The Firehole River in Wyoming

Stream photos

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Tricorythodes (Trico) Mayfly NymphTricorythodes (Trico) Mayfly Nymph
Dorsal view of a Tricorythodes (Leptohyphidae) (Trico) Mayfly Nymph 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.
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Closeup insects by Bnewell from the Columbia River in Washington

Male Heptagenia adaequata Mayfly Spinner
2 Pictures
Male Heptagenia adaequata (Heptageniidae) Mayfly Spinner from the Columbia River in Washington
Added by Bnewell on July 26, 2012
Collected July 21, 2012 from the Columbia River in Washington and added by Bnewell on July 26, 2012

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