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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.

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.

Closeup insects by Troutnut from the Teal River in Wisconsin

Male Nemotaulius hostilis (Limnephilidae) (Northern Caddisfly) Caddisfly Adult from the Teal River in Wisconsin
Lateral view of a Male Acerpenna pygmaea (Baetidae) (Tiny Blue-Winged Olive) Mayfly Spinner from the Teal River in Wisconsin
Artistic view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin

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