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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Dorsal view of a Setvena wahkeena (Perlodidae) (Wahkeena Springfly) Stonefly Nymph from Mystery Creek #199 in Washington
As far as I can tell, this species has only previously been reported from one site in Oregon along the Columbia gorge. However, the key characteristics are fairly unmistakable in all except for one minor detail:
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
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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Sasso has attached this picture to this report. The message is below.

Report at a Glance

General RegionSW WI
Specific LocationWest Branch - Kickapoo River
Dates Fished9/16
Time of Daya.m.
Fish CaughtBrookies & Brownies
Conditions & Hatchesnada... lots of hoppers.

Details and Discussion


Posts: 3
Sasso on Sep 19, 2006September 19th, 2006, 3:04 am EDT
Beautiful day in the Driftless area... except winds in the ~10-25 mph range. Caught your usual assortment of little brookies mixed in with a few nice browns. Flipped over to a #14 BH prince nymph around 10 am and worked the brushline. Hooked into this 16" beautifully colored brown on a 3 wt... great fight!

[edited by Troutnut to have a title]
Wisconsin The Driftless region

Posts: 10
Greyghost on Apr 12, 2007April 12th, 2007, 1:07 pm EDT
Fished the drifless area week of the 8th of April. Wind and snow conditions horrible. Caught fish like the world was coming to and end go figure.
Greyghost the legend the man
Konchu's profile picture
Site Editor

Posts: 498
Konchu on Apr 12, 2007April 12th, 2007, 3:34 pm EDT
just learning about flyfishing...

Trout usually aren't so active during inclement weather are they? What made the difference on the day you were out? Were they just hungry?
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Apr 12, 2007April 12th, 2007, 6:43 pm EDT
Trout can definitely be active during inclement weather. It all depends on the specifics... and I don't think any of us really understands those specifics very well.

As a very general rule with lots of exceptions, trout are probably less active overall when the weather's bad than when it's pleasant.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Apr 12, 2007April 12th, 2007, 6:59 pm EDT
Yeah, but if the trout in question were residents of a spring creek--as I suspect they were--they were one heck of a lot more comfortable than Greyghost was! Spring creek trout have it made pretty much year-round.

Posts: 14
Beachvid on Apr 12, 2007April 12th, 2007, 7:53 pm EDT
Not to reduce the value or correctness of your statement regarding spring creeks but just to bring out a point that I beleive misleads many anglers about fish, be advised that "trout are neither comfortable or uncomfortable in cold weather or water". Being cold blooded (blood temperature approx. same as the water) they don't feel the difference in their body temperature and the water like us warm blooded humans.
The colder the water, the less active the fish are, the less food they ussually burn and consequently, the less they usually eat. Pay particular attention to the word "usually".
In cold water with little food, (which is not the case in a spring creek) in theory (& if it were not for mother nature) they could actually burn more energy than they could replace trying to find and catch enough to eat.
If this don't get a reaction, I don't know what will.
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Apr 13, 2007April 13th, 2007, 7:33 am EDT
Fair enough, Beachvid/VideoNut. I was tempted to quibble about the definition(s) of the word "comfortable," but because I was mostly joking, I'll resist the bait like a wise trout. ;)
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Alexandria Pa

Posts: 362
JAD on Apr 14, 2007April 14th, 2007, 2:28 am EDT
GONZO April 13th, 2007, 2:33 pm
Boiling Springs, PA

Posts: 423 Fair enough, Beachvid/VideoNut. I was tempted to quibble about the definition(s) of the word "comfortable," but because I was mostly joking, I'll resist the bait like a wise trout. ;)

Lloyd :) I think you may have been hooked before.


They fasten red (crimson red) wool around a hook, and fix onto the wool two feathers which grow under a cock’s wattles, and which in colour are like wax.
Radcliffe's Fishing from the Earliest Times,
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"Bear Swamp," PA

Posts: 1681
GONZO on Apr 14, 2007April 14th, 2007, 9:54 am EDT
Lloyd :) I think you may have been hooked before.

Exactly, John! However, despite my caution, the problem is that we all have to eat sooner or later. So I'll likely be hooked again! ;)

Posts: 7
Macgruber on May 30, 2007May 30th, 2007, 4:45 am EDT
in my (by no means expert) experience sustained warmer weather has a big impact on early season trout...... even if you are out fishing in crappy weather, if the week prior was a few degrees warmer, the trout are eager to get going coming out of winter.....

i've had a number of my best fishing days when it's snowing in april, but generally coming off a warmer week of weather..... once the temp climbs a few degrees in the streams, it takes a few days of colder weather to push it back down to where the fish become inactive again, esp. on spring creeks...... water temp obviously means a lot more than what's goin on up above..... so typically, i'd say ignore the day yer on the water and gauge it more by what's happened the last three or four days..... (and bring a thermometer)

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