A deadly trout fly pattern that imitates aquatic worms in their natural environment Excellent dropper nymph fly - beaded for getting deep in the water column quickly Excellent for catching trout, bass or panfish. Hand tied flies with quality materials and premium hooks. Six Brown San Juan Bead Head Worm Flies Hook Size 14 Located in Oregon, we tie 1000's of patterns from the proven classics to the newest innovations. A deadly trout fly pattern that imitates aquatic worms in their natural environment from the San Juan River in New Mexico to the spring creeks of New Zealand and anywhere else that trout swim.