The Adams Midge Nymph is the original midge fly imitation. The Midge Adams has brilliant capabilities in all conditions of water especially those small quiet stretches where the hungry trout likes to lunch. The Adams Midge is a fly coveted by trout fisherman across North America. Adams Midge. The Adams Midge is a superb fly for those smooth stretches of water, or quiet back streams. A necessity for every trout fisherman's tackle box. Although small in size the Adams Midge can produce trophy fish time after time.