Not sure what name you have for this fly but regardless fish will eat it.  Simulating a large stonefly this pattern has become widely known for it’s fishability.

The version tied here is heavily weighted to help search deeper holes and faster runs.  It is an awesome pattern in drop shot style nymph rigs with an emerger on lead.  Or switch it around and have this as your lead fly with a smaller nymph/pupae trailing on the point. Learn More “How to Tie: The Rubber Legs Stone”