Golden Stoneflies behave in a manner similar to salmonflies, but they are a tad smaller.
Nymphs are large and live in riffles and rocky, bouldery areas with moderate to fast current. They often lose their grip and are taken all year by trout. An appropriate pattern dead-drifted near the bottom is effective. Choose your imitation carefully, however. Many fly shops sell a golden stonefly nymph that is golden in color, but the actual nymph is mottled shades of tan, black, and brown. However, when golden stonefly nymph molt, the new instar can briefly be a much brighter color . . .