The WD-40 Nymph is a proven small-profile trout fly designed to imitate emerging insects and midges, making it a go-to pattern when fish are feeding subsurface and keyed in on subtle presentations.
Tied on a barbed hook.
Built with a slim, natural profile and soft movement, this fly excels in clear water and pressured fisheries where trout are selective. The WD-40 is especially effective when fished as part of a nymph rig or as a dropper behind a dry fly, producing consistent results when larger patterns are ignored.
Whether you're targeting rising trout or fishing deeper runs, this pattern is a reliable option when conditions call for precision and finesse.
Why It Works
• Slim profile matches small emerging insects • Subtle movement triggers strikes from pressured fish • Effective in clear water and technical conditions • Proven pattern for consistent trout production • Ideal for nymph rigs and dry-dropper setups
Best Uses
• Nymph rigs • Dry-dropper setups • Clear water conditions • Pressured trout • Slow and moderate currents
