Copper John
The Copper John is one of the most effective and widely used modern nymph patterns, originally developed by Colorado angler John Barr in the 1990s. Designed to sink quickly and get down to feeding fish, its wire-wrapped body and bead head give it a dense, slim profile perfect for fast-moving water. While it doesn’t imitate any single insect exactly, the Copper John is a highly suggestive mayfly or stonefly imitation, making it versatile across a wide range of conditions. The combination of flash, segmentation, and weight makes it a deadly attractor pattern, especially when fish are feeding subsurface. Whether fished solo or as part of a nymph rig, the Copper John earns its place in nearly every trout angler’s fly box.From the tyer: "When I first started nymph fishing in the 1970's my favorite fly was the Brassie. The style I used was simply copper wire wrapped on the shank of a hook and nothing else. The fly sank fast and it caught fish. Nymph patterns evolved greatly in the following