The Copper John Nymph is recognised as one of the most effective weighted nymph patterns in contemporary fly fishing. Developed in the early 1990s by John Barr, it was purpose built to reach depth quickly and remain in the feeding zone for longer. Over time, it has become a reliable choice for anglers targeting trout and grayling in rivers, streams and stillwaters.
Distinguished by its slim copper wire body and bead head, the Copper John features a streamlined design that cuts through current efficiently. Rather than imitating one specific hatch, it acts as a general subsurface representation of aquatic nymphs and larvae. The weighted construction ensures it sinks rapidly, helping anglers reach bottom holding fish that lighter patterns may miss.
Effective across a range of water types, from clear chalk streams to fast freestone rivers and large reservoirs, this fly offers consistent performance throughout the season. Its blend of depth control, durability and subtle flash makes it a dependable all round nymph.
Please note all of our fishing flies are barbless unless otherwise stated.
Copper John Nymph Specifications
Tail - Biot Brown (dyed brown goose)
Body - Copper Wire
Hackle Head - Black Silk
Thorax - Peacock Herl
Wing Case - Raffia Black & Pearl Mylar
Head - Gold Bead
Hook - Barbless, Mustad of Norway
Target Species - Trout & Grayling
Why Choose the Copper John Nymph ?
Rapid Sink Rate
The wire body and bead head help the fly penetrate surface tension quickly to hold depth in faster water.
Subtle Attraction
The copper finish provides a controlled level of flash that can stimulate interest without spooking cautious fish.
Cold Water Advantage
Particularly effective in winter and early-season conditions when fish feed close to the riverbed.
Durable Construction
The wire wrapped body enhances strength and creates a segmented appearance that withstands repeated strikes.
How Do You Fish the Copper John Nymph?
New Zealand (Dry-Dropper) Setup
Fish the Copper John as a weighted dropper beneath a buoyant dry fly such as a parachute dry or klinkhammer. This method allows you to target fish feeding both on the surface and below simultaneously.
Indicator Nymphing
In deeper runs or strong currents, present the fly under a strike indicator. The slim profile helps it track naturally along the bottom while maintaining consistent depth.
Early Season Slow Drift
During colder months, allow the fly to move slowly along the riverbed under light tension. The added flash can prompt takes from trout and grayling that are feeding cautiously.
Stillwater Depth Control
On lakes and reservoirs, allow the fly to sink before retrieving steadily with a slow figure of eight motion. It performs particularly well when fish are holding near the bottom or around submerged weed beds.
The Copper John Nymph remains a proven and adaptable pattern, offering reliable depth, durability and fish catching performance across a wide range of fishing conditions.
