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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.

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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Eastern Brown Drakes

This common name refers to only one species. Click its scientific name to learn more.

Mayfly Species Ephemera simulans

These are very rarely called Eastern Brown Drakes.
The Brown Drakes are a favorite hatch of many in the Midwest, and they make a good showing on localized waters across the country. They are usually the first in a series of big drakes which bring large trout to the surface at twilight and into the early hours of the night. The experience can be much like fishing the Hexagenia limbata hatch, except that the nymphs seem to emerge from slightly more wadeable, sandy bottoms instead of the boot-sucking mud underlying the best Hex water. It will draw big trout out from the depths of a big pool to feed in the shallow tailout after dark.
Male Ephemera simulans (Ephemeridae) (Brown Drake) Mayfly Dun from Flathead Lake in Montana
Lateral view of a Male Ephemera simulans (Ephemeridae) (Brown Drake) Mayfly Spinner from the Namekagon River in Wisconsin
Ephemera simulans (Ephemeridae) (Brown Drake) Mayfly Nymph from the Namekagon River in Wisconsin

Eastern Brown Drakes

Scientific Name
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