Baetis Dun

Baetis Dun

The Baetis Dun is a precise imitation of the adult Blue Wing Olive mayfly — one of the most important and widespread hatches in North American trout fishing. Baetis hatches occur throughout the season, often peaking in cool, overcast conditions in spring and fall when other hatches are slow, and they can trigger some of the most selective and rewarding dry fly fishing of the year. The small olive body and upright wing profile of this pattern closely match the natural dun, making it an essential fly for tailwaters, spring creeks, and any clear, cold stream with a healthy Baetis population.

Pattern Details

• Style: BWO dry fly / mayfly dun imitation
• Color: Olive body with upright wing — precise imitation of the Blue Wing Olive dun
• Best water: Tailwaters, spring creeks, and clear freestone streams during Baetis hatches — flat water, slow runs, and tailouts where selective fish are rising
• Techniques: Dead-drifted to rising fish during a BWO hatch — precise presentation and drag-free drift are critical
• Sizes available: 20, 22

A tailwater and spring creek essential — when Baetis are hatching and trout are rising selectively, this is the fly you reach for.