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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.

Lateral view of a Female Sweltsa borealis (Chloroperlidae) (Boreal Sallfly) Stonefly Adult from Harris Creek in Washington
I was not fishing, but happened to be at an unrelated social event on a hill above this tiny creek (which I never even saw) when this stonefly flew by me. I assume it came from there. Some key characteristics are tricky to follow, but process of elimination ultimately led me to Sweltsa borealis. It is reassuringly similar to this specimen posted by Bob Newell years ago. It is also so strikingly similar to this nymph from the same river system that I'm comfortable identifying that nymph from this adult. I was especially pleased with the closeup photo of four mites parasitizing this one.
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.

Trout, Salmon, and Whitefish

This common name refers to only one order. Click its scientific name to learn more.

Fish Order Salmonidae

These are often called Trout, Salmon, and Whitefish.
Salmonidae (Trout, Salmon, and Whitefish) Fish Adult from unknown in Wisconsin
Brook Trout
Salvenilus fontinalis

This is a young of the year brook trout that I caught and released after a quick picture. I included it here since it's about of the size one might imitate with a streamer.

I apologize for the horrible quality of the picture; this was taken a year or two (and a camera or two) before I started Troutnut.com and learned how to do photography.

Trout, Salmon, and Whitefish

Scientific Name
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