
Description
The Mercury Baetis, designed by renowned fly tier Pat Dorsey, is a highly effective Blue-Winged Olive (BWO) nymph pattern that combines elements of the RS2 and Barr’s Emerger. Its slim profile and subtle flash make it particularly successful in imitating Baetis nymphs, especially in tailwater fisheries where trout are selective
Pro Tip
Use this fly as a dry, let it sink just under the surface to trout feeding on emergers.
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Fly Tying Recipe
- Hook: #18–22 Tiemco 101
- Bead: Clear Midge Glass Bead
- Thread: Black UTC 70
- Tail: Black Hackle Fibers
- Body: Olive Superfine Dubbing
- Casing/Legs: Black Antron or Z-Lon
Fly Tying Video
From: In The Riffle


