The Jig CDC Thrasher Red from Montana Fly Co. is a red mayfly nymph with CDC tied in size #18. The red dressing suits a wide range of water conditions.
Mayfly nymphs live on the streambed for most of the year, making them a staple trout food. Dead-drift this pattern near the bottom — under an indicator, tight-lined, or as a dropper. A year-round producer, since mayfly nymphs are always on the menu.
Tied on a jig hook, it rides hook-point-up, which means fewer snags on the bottom and surer hook-sets.