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Pattern Library
Hex Nymph fly pattern
Nymph · #203 of 532

Hex Nymph

Also known as: Hexagenia Nymph

The Hex Nymph is one of the best trout nymphs for lakes and slow rivers where giant Hexagenia mayflies live in the substrate. Trout feed heavily on these large swimming nymphs before the hatch, making this a serious pattern for anglers chasing trophy fish around hex events.

Imitates: Hexagenia burrowing mayfly nymphs

Quick Reference

Best Sizes
#6-10
Best Season
Late spring into summer
Best Conditions
Lakes, slow rivers, weed edges, and evening pre-hatch periods
Water Temp
52-68°F
Recommended Tippet
3X-4X

How to Rig It

Fish it on an intermediate or sink-tip line near bottom before and during the hex window.

How to Present It

Use slow strips or hand-twist retrieves that imitate a large mayfly nymph swimming toward shore.

Why It Works

Hex nymphs are huge protein-rich prey, and trout often feed on them before the famous surface hatch even starts.

History

Hexagenia hatches have inspired dedicated patterns for generations because they can bring truly large trout into predictable feeding behavior.

Pro Tip

Do not wait only for adults. The nymph stage often produces the biggest trout before the visible hatch begins.

Frequently Asked Questions

When should I fish a Hex Nymph?+

Before and during hex hatches, especially in lakes or slow river sections where trout hunt the migrating nymphs.

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