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.

I spent more than an hour casting to several rising trout in this pool and caught only two. Its clear water and tricky currents harbor dozens of free-rising, usually very hard-to-catch fish.

From Enfield Creek in New York

Stream photos

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Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

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Tricorythodes (Trico) Mayfly Nymph Tricorythodes (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.

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.

Updates from June 11, 2007

Closeup insects by Bnewell from the Flathead River and Rock Creek in Montana

Hydropsyche (Spotted Sedge) Caddisfly Larva

1 Picture

Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Flathead River-lower in Montana

This genus can get incredibly abundant especially below dams.This specimen shows the two sclerotized bars needed to identify it to genus. These usually curl up like this one when preserved.

Collected June 11, 2007 from the Flathead River-lower in Montana

Added by Bnewell on June 26, 2011

Collected June 11, 2007 from the Flathead River-lower in Montana and added by Bnewell on June 26, 2011

Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly Nymph

2 Pictures