Dry FliesBarr's Vis-A-Dun
The Barr's Vis-A-Dun is a versatile and effective dry fly pattern that imitates a wide range of mayfly species. It is designed to sit low in the water, making it a convincing silhouette from a trout's view. The pattern's simplicity makes it a favorite among many anglers.
Spring, Summer, Fall
Intermediate
Trout
Overview
Barr's Vis-A-Dun is a mayfly emerger-to-dun crossover pattern designed to sit flush in the film with maximum visibility. The fly is tied with a trailing shuck of Z-lon or Antron, a slender dubbed body, and an upright, high-viz post with a sparse hackle wrapped around it. The thorax is often dubbed slightly heavier to keep the fly balanced. It's a go-to dry fly for selective trout, particularly in slower water or when matching Baetis, PMDs, or other mayflies.
Pattern Characteristics
Materials
Hook: Tiemco 100, size #12–#18
Thread: Olive 8/0 Uni-thread
Wing: Deer hair
Body: Olive superfine dubbing
Tail: Coq de Leon
Fishing Tips
Season
Spring to Fall
Presentation
Standard dry fly presentations work well. Try to match the hatch in terms of size and color.
When to Use
When mayflies are active and trout are feeding on the surface.
Water Type
Works in both stillwater and moving water.
Rigging Suggestions
Fish this fly solo on a standard 9-foot leader ending in 5X or 6X tippet.
Visibility & Floatation
The deer hair wing makes this fly highly visible and helps it float. Apply floatant to the body and wing before casting.
