X-Caddis
Imitates: Emerging caddis with trailing pupal shuck
Quick Reference
- Best Sizes
- #14-18
- Best Season
- May-September (peaks during caddis hatches)
- Best Conditions
- Active caddis hatch, fish refusing adult caddis, riffles into pools
- Water Temp
- 52-65°F
- Recommended Tippet
- 5X mono
How to Rig It
Single dry, or trail 12" behind an Elk Hair Caddis as a 'stuck-in-the-shuck' indicator combo.
How to Present It
Dead-drift through the seam where caddis are emerging. The trailing zelon shuck is the trigger — keep it in the film, not skating.
Why It Works
Half-emerged caddis are easy targets — they can't fly, can't dive. The amber zelon shuck off the bend perfectly imitates the pupal husk a real caddis is fighting to escape. When fish refuse adults, they're eating these.
History
Tied by Craig Mathews and John Juracek at Blue Ribbon Flies in West Yellowstone in the 1980s. Designed for Slough Creek and the Madison River, where Elk Hair Caddis stopped working on educated trout.
Pro Tip
If trout are 'rising' but you can't catch them on adult caddis, they're eating emergers. Tie an X-Caddis on a clean leader and stop using floatant on the body — let the rear half ride low.
Frequently Asked Questions
What does X-Caddis stand for?+
The 'X' refers to the trailing shuck pattern Craig Mathews developed — the X-Series includes the X-Caddis and the Sparkle Dun mayfly emerger.
When does the X-Caddis outfish the Elk Hair Caddis?+
Any time fish refuse an adult caddis during an active hatch. The X-Caddis sits flush and looks crippled — selective trout key on the easiest meals.
Not sure if X-Caddis is right today?
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