When to use it
- During Sulphur dun activity.
- When fish reject a higher-riding hackled dry.
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Reviewed technical illustration← Fly Box
Dry · guide 38
Sulphur Comparadun
A pale orange-yellow, hackleless Comparadun tied specifically for Sulphur mayfly duns.
- Common size
- Often #14–18; verify locally
- Colors reviewed
- pale orange, yellow-cream, dun wing
- Imitates
- Sulphur mayfly dun, low-riding pale mayfly adult
The fan-shaped upright deer-hair wing, split tail, low hackleless body, and Sulphur-specific color define this destination. A PMD Comparadun is related but not interchangeable by name.
Technical illustration
Identification views
Sulphur Comparadun reviewed side profile
A schematic profile emphasizing upright fan-shaped hair wing and split tails.
- View
- reviewed side profile
- Color shown
- pale orange-yellow body and dun hair wing
- Look for
- upright fan-shaped hair wing; split tails; low hackleless body; Sulphur-specific body tone
On the water
Understand it. Then fish it.
The river, depth, insects, and fish behavior still decide the final presentation. These are reviewed starting points—not a claim about what is happening today.
How to fish it
- Dead-drift low in the film.
- Match local Sulphur size and tone.
Mistakes to avoid
- Relabeling a PMD-colored fly without checking tone.
- Calling a trailing-shuck Sparkle Dun a Comparadun.
Variant control
Small changes matter.
Three reviewed technical illustrations show the identifying profile, construction, and fishing orientation. They are schematic field-guide aids, not photographs.
Reviewed core form
The fan-shaped upright deer-hair wing, split tail, low hackleless body, and Sulphur-specific color define this destination. A PMD Comparadun is related but not interchangeable by name.- Colors shown
- pale orange, yellow-cream, dun wing
- Weighting
- Weighting is identified when it defines the reviewed form; other bead or weight choices remain labeled variants.
Review trail
Sources, rights, and limits.
Pattern facts were reviewed on 2026-07-12. Every image has its own rights record; photographed hand-tied flies may still vary slightly in proportion.