A trout and yellowfish pattern, a deadly fly for both species.
As the name suggests, the worm was first developed by a fly angler fishing the San Juan River in New Mexico. Little red bloodworms are prolific in the San Juan River, and this fisherman wanted to come up with a fly to imitate them effectively. Thus, the San Juan pattern was born.
The San Juan Worm can be tied using chenille or even flexi-floss and a bead can be added in order to get this fly down to the bottom quicker.
Use as a point fly for yellows and trout in rivers and still waters on a tandem rid under a strike indicator in still waters.