Nymph Flies
Because a trout's diet consists primarily of insects in their sub-surface nymph form, the Nymph is considered to be the most productive method of fly fishing. The nymph is one of the stages of the life of insects such as midges (Chironomids), mayflies, caddis flies, or the stone fly. The nymph is the stage in which they live under the surface of the water, along the stream beds or in the lake bottom.
