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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.

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
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.

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Troutnut on Aug 2, 2008August 2nd, 2008, 8:48 pm EDT
I posted some more neat stuff from HD video cameras on my graduate project's website:

http://www.chenakings.org/2008/08/02/salmon-footage/

The YouTube clips leave a lot to be desired, because YouTube compresses the heck out of things and I haven't figured out how to encode videos for the best YouTube quality yet. But click the still pictures in that post (which are just frame captures from the full-sized video) and you'll see some wild Alaskan fish up close & personal.

I wish I could share the full HD video with everyone, because it's really, really cool, but the file size is about a gigabyte per minute.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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