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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.
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Troutnut.com User Waxsmith (A.K.)

Troutnut.com User Waxsmith (A.K.)

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Where I live in Canada the only trout there are no native trout other than Lake Trout. We do now, however have some smaller streams and many small lakes stocked for many years already with Brookies as well as Rainbow and Brown trout.To make for a little diversity there are many lakes in this land with Lake Whitefish which can be lots of challenge and fun when hexagania are hatching.Two or three of our large rivers also without trout do hold Goldeyes which are at times madly after Mayfly type of insects mostly in late summer and early autumn. Hey, there is also the odd pike to be caught and eaten I might add;Woolly Bu.... quite often do them in around here(elsewhere probably too). Since in Nov. everything watery freezes up around here there is still the option to catch Jacks (as pike are called around here) through the ice, modified Flashtail Whistlers are quite useful for that purpose. That's it for now. Greetings, Waxsmith.
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