Effective midge larvae patterns typically share two main characteristics: a segmented body and a super-slim profile. Stan's BH Miracle Nymph has both, which is why it shows up in tailwater fly boxes—and fish mouths—all across the country. With wire ribbing to weigh it down and prevent it from bulking up, it's a fly no serious tailwater fly fisher should be without. Sizes 20, 22, 24.