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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.

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
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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Male Baetidae (Blue-Winged Olive) Mayfly Dun Pictures

This ia a very tiny (hook size 22-24) dun. The pictures are terrible, but it's very fragile and it's one of the first adult mayflies I ever photographed.

This mayfly was collected from unknown in Wisconsin on April 30th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.


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Male Baetidae (Blue-Winged Olive) Mayfly Dun Pictures

Collection details
Location: unknown, Wisconsin
Date: April 30th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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