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

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 Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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.

Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Oct 13, 2009October 13th, 2009, 4:23 am EDT
Hi, I don't know if anyone else has any experiences blind casting Isonychia dun or emerger patterns in riffles in the fall, but I just tried it for a couple of days with exciting results. I had read about doing this in several different sources, and just decided to give it a try where there were few fish working sporadically, probably taking little olives that were hatching. The fish took the Iso flies confidently, at times where there was no previous surface activity in a spot. It's something I'll certainly try again anytime that Isos are active. Does anyone else have an experience like this one?
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Shawnny3
Moderator
Pleasant Gap, PA

Posts: 1197
Shawnny3 on Oct 13, 2009October 13th, 2009, 9:42 am EDT
Thanks for the account, Louis. I'll certainly try this if I have the opportunity.

-Shawn
Jewelry-Quality Artistic Salmon Flies, by Shawn Davis
www.davisflydesigns.com
Lastchance
Portage, PA

Posts: 437
Lastchance on Oct 15, 2009October 15th, 2009, 2:12 pm EDT
Hi: I tried that last week in slow water with no success. I'll give it another go in the next few days in the riffles. Why the riffles?
Bruce
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Oct 16, 2009October 16th, 2009, 5:32 am EDT
Bruce, I hope Gonzo and others who have some experience with Isos will also reply, since I'm a novice with all this. It would seem that in general at this time of year streams may be low and clear. Also, fish are well-educated. Riffles mask both the angler, her or his line, and errors in drift. Blind casting in thin or flat water may be less productive because of the above reasons. It is also hard to know where fish are in a big pool. I did hook up with a fish in flat shallow water at the head of a pool, but I had watched him eating Isos before casting to him. Reading the water well may help some in pools, but riffles offer many kinds of lies, and when food is available fish may gather in a riffle to feed. Also, to increase your odds, it may be a good idea to try to spot a few Isos in an eddy or elsewhere to be sure they are available to the fish.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
LittleJ
Hollidaysburg Pa

Posts: 251
LittleJ on Oct 18, 2009October 18th, 2009, 7:39 am EDT
I agree with louis but I've also kind of adapted the theory that riffles make an imitation Iso look more like a live Iso. Lots of motion. I have far better luck with them in slower tailouts if I move the bug with very short jerky strips, but I can dead drift them in the riffles w/ equal success. From what I have seen they are a very active bug and should be fished as one.
Jeff
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Oct 18, 2009October 18th, 2009, 12:03 pm EDT
Hi Jeff,

Are we still talking about duns and emergers or are we moving on to nymphs? I've been moving my Iso nymphs a good bit, as per John S.'s guidance, but typically aim at dead drifts for duns and emergers which I fished mostly during most recent outings. However I did have one fish hit an emerger as it started to swing in the tail of a pool. And I'm sure wet flies swinging or stripped also could elicit some interest when Isos are darting around trying to emerge.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
LittleJ
Hollidaysburg Pa

Posts: 251
LittleJ on Oct 18, 2009October 18th, 2009, 1:00 pm EDT
I guess that's what I get for reading the posts to fast, I missed the whole point.......Sorry
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Oct 19, 2009October 19th, 2009, 10:39 am EDT
No problem, Jeff. It got me thinking about the other aspects of Iso fishing as well and about fishing wet flies, which I've had good luck with too during Iso emergences. What works best certainly varies from day to day and from angler to angler.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

Quick Reply

Related Discussions

Topic
Replies
Last Reply
9
Feb 25, 2015
by Creno
3
May 18, 2020
by Wbranch
1
Sep 21, 2006
by Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy