Simi Seal Leech

The Simi Seal Leech is a highly adaptable and impressionistic fly pattern created by John Rohmer. Designed to mimic leeches, baitfish, crayfish, and larger nymphs, it features Arizona Simi Seal Dubbing—a unique blend of mohair and synthetic fibers that provides a coarse texture with subtle flash for a lifelike appearance. This versatile pattern is simple to tie and incredibly effective, making it a favorite for anglers targeting trout and other species in both stillwater and flowing rivers. Its ability to imitate a variety of aquatic prey ensures its place in any angler’s fly box.

Fish the Simi Seal Leech with a slow, steady retrieve in stillwater to mimic the natural swimming motion of a leech, or swing it through the current in rivers to imitate a baitfish or crayfish. Experiment with colors like black, brown, olive, or tan to match the local forage. Adding a bead head can increase sink rate for deeper presentations, making it ideal for targeting fish holding near the bottom.