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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 Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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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Report at a Glance

General RegionCatch and Release area
Dates Fished9/16/06
Time of Day9:00a - 1:30p
Fish CaughtSeveral nice Rainbows (12" - 15") and a couple small Browns
Conditions & HatchesThere was a big Trico hatch that started at around 10:00a and spinner fall began around 11:00a. The flow was hovering around 100cfs, the clarity was great.

Details and Discussion

Littleton, Colorado

Posts: 35
Sundula on Sep 16, 2006September 16th, 2006, 5:03 pm EDT
I used a #22 Mercury RS2 dropped behind a #20 chartruese vinyl midge, I only witnessed a couple of riseing trout sipping on Trico spinners, the reason for this, I beleive is the spinners that were in my area were blown well down stream when the wind piced up around 11:30. The fishing really got tough when the wind picked up in the early afternoon, before that it was fishing excellent. They were taking both flies with a good dead drift, I was only able to sight nymph two fish. The majority of the fish I caught were feeding deep in the tailouts and in the deep seams.
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Sep 16, 2006September 16th, 2006, 6:18 pm EDT
Good fishing! I'm going to give the RS2 a try soon on one of my local small streams. They're not quite so demanding of finesse as a tailwater... so I'll probably be fishing it under a size 16 Royal Wulff.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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