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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
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.

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
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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BDK has attached these 2 pictures to aid in identification. The message is below.
BDK
BDK's profile picture
dfw , Texas

Posts: 1
BDK on Jun 3, 2014June 3rd, 2014, 9:50 am EDT
We where using a seine this weekend there where alot of these in the river can not identify it . Help would be most appreciated
Entoman
Entoman's profile picture
Northern CA & ID

Posts: 2604
Entoman on Jun 3, 2014June 3rd, 2014, 12:25 pm EDT
Welcome to the forum, BDK.

Those are Isonychia (Leadwing Coachman) mayfly nymphs.
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on Jun 3, 2014June 3rd, 2014, 6:00 pm EDT
Yes! Strong swimmers they are. Welcome.

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