
Hex 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.
Not sure if Hex Nymph is right today?
Get a fly recommendation based on live water temp, flow, sky, and time of day for any river in the US.
Open Fly Advisor