WD40 Nymph

WD40 Nymph – Olive | The Midge Pattern Tailwater Trout Can't Refuse

Developed on the demanding tailwaters of the South Platte, the WD40 Nymph has earned its place as one of the most reliable small-fly patterns in the modern trout angler's box. Its slim, segmented profile imitates emerging midges and small mayfly nymphs with uncanny realism — and trout eat it with confidence, even in the clearest, most pressured water.

Why It Works

• Slim, segmented body perfectly imitates midge pupae and small emerging nymphs in the film
• Olive coloration is a year-round tailwater staple that matches a wide range of natural food sources
• Size 20 is ideal for technical, clear-water presentations where smaller is always better
• Fine-wire hook ensures reliable hooksets on subtle takes without tearing small mouths

When & Where to Fish It

The WD40 shines on tailwaters, spring creeks, and any clear-water fishery where trout are keyed in on midges. Dead-drift it tight to the bottom, fish it as a dropper below a heavier anchor fly, or run it in a Euro nymphing rig. The Olive size 20 is a year-round producer — especially deadly during midge hatches and on fish that have seen every other pattern in the box.

Available Sizes: 20 | Color: Olive | Type: Midge Nymph / Tailwater Pattern