Rio Flies Copper John Bead Head Nymph
The classic Copper John Bead Head Nymph from Rio Flies is a very effective mayfly nymph or midge pupa imitation – deadly on trout rivers worldwide, and an absolute must-have in every trout fisher’s fly box. The fly has a tapered wire abdomen with a split tail, peacock thorax, wing case and legs, and can be tied in many colors.
- Go-to dropper pattern
- For trout and other freshwater species
- Bead head for weight
- Sold individually
| Feature | Detail |
|---|---|
| Material | Wire abdomen, peacock thorax, wing case, legs |
| Design | Tapered wire abdomen with split tail |
| Use | Mayfly nymph or midge pupa imitation |
| Target Species | Trout and other freshwater species |
| Weight Type | Bead head |
This item only ships within Canada.
FAQ
What types of fish is the Copper John Bead Head Nymph best suited for?
The Copper John Bead Head Nymph is best suited for trout and other freshwater species.
Can this fly be used in different color variations?
Yes, the fly can be tied in many colors to match different aquatic conditions and insect patterns.
Is the bead head design necessary for fishing success?
Yes, the bead head provides added weight, helping the fly sink and stay in place when used as a dropper pattern.


Steven Terry –
This fly performs well in cold water streams. I’ve used it as a dropper with success on several trout rivers. The weight and balance are spot on, and it looks natural when fished.
Dominic Morrison –
Great imitation of a mayfly nymph. It holds up well in the water and works well when tied in natural colors. A reliable addition to my fly box.
Dylan Hughes –
Fished it during a morning trout run and caught two fish. The split tail and peacock thorax make it look authentic. I’ll be buying more in different colors.
Oliver Ogden –
Solid construction. The bead head keeps it from floating, and it’s easy to tie. Works well in both still and moving water.
Boris Morgan –
One of my go-to patterns for midge pupa imitations. It’s durable and realistic. I’ve used it in multiple rivers and it consistently brings results.