Ephemera Danica Nymph Pattern Materials

Big mayflies demand respect — and precision.

Ephemera danica nymphs are large, slow-moving, and closely inspected by trout — which means shortcuts don’t work. This collection focuses on the materials needed to tie highly realistic Danica nymph patterns, using accurate bodies, defined wing buds, soft legs, and clean proportions. When trout are keyed on big mayfly nymphs, this is the level of detail that makes the difference.

Ephemera Danica Nymph Pattern

Ephemera danica nymphs are among the largest and most important mayfly nymphs in many rivers, especially during late spring and early summer. They live deep, move deliberately, and become highly visible as they migrate toward softer water prior to emergence. Trout recognize them instantly — and they don’t tolerate sloppy imitations.

The materials in this Ephemera Danica Nymph Pattern collection are selected specifically to capture that size, shape, and realism. Detailed Danica nymph bodies establish the correct profile and segmentation, while matching wing buds and backs reinforce the unmistakable silhouette of this species. Soft, flexible nymph legs add restrained movement that looks natural at slow drift speeds, helping flies appear alive without exaggeration.

Paired with fine-wire, longer-shank nymph hooks, these components allow you to tie balanced Danica nymphs that sink naturally, drift cleanly, and hold their posture in the current. This collection is built for anglers who understand that with big mayflies, accuracy matters — and when you get it right, trout respond with confidence.

Explore Our Fly Tying Video Tutorials

Looking to get proportions and profile right? Our fly-tying video gallery breaks down proven Ephemera danica nymph patterns, material choices, and subtle adjustments that help these big nymphs fish naturally in real water.