The Copper J (compare to a Copper John) is a combination of three very effective nymph patterns, the prince nymph, the brassie, and the pheasant tail. The rubber legs on this fly add another element of realism to this very effective nymph. The pattern is very effective, and has become just as popular as any other nymph that we sell. The most common way to fish this nymph is to tie it on behind a hopper pattern.