Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin

Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Mount Deborah and Hess Mountains. Two of the greatest peaks of the Alaska Range rise behind the braided, glacial Susitna River. These massive mountains are 35 miles north of where I took this picture.

From the Susitna River in Alaska

Stream photos

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Male Baetidae (Blue-Winged Olive) Mayfly Dun Male Baetidae (Blue-Winged Olive) Mayfly Dun

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington

This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.

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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.com User JMarcus (Jon Marcus)

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Jon Marcus

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Bellingham, WA

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Caught my first fish at 6. (a rainbow trout) Started tying at 8 & been at it for 50+ years. Love rivers. One of the founders of Washington Trout. (Now: The Wild Fish Conservancy)

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Re: The "Mess"
In Fly Tying by Wiflyfisher

Sep 14, 2007
by JMarcus

Hex MayfliesHexagenia limbata

Troutnut.com User JMarcus (Jon Marcus)