Tex's Two Step
This little articulating fly has produced great results for me on the Guadalupe River in the Texas Hill Country. If you asked me if this pattern was intended to imitate a worm, helgramite, crawfish, or baitfish, my answer would simply be "Yes". So far, I have caught Bass, Sunfish, and Rio Grande Cichlids on Tex's Two Step but I am confident that this fly would be effective with most predator fish.