This is a great pattern for swinging for trout or spring steelhead on light switch rods or trout spey set ups. It is designed to be fished as bait fish or fry pattern that is durable and easy to tie when you loose it in the rocks.
A classic wet fly with varying origin stories, this is an anything-that-swims pattern for lakes and rivers. It uses just a few materials, comes together quickly, and can be modified in a myriad of ways.
This is billed as a fly for steelhead, but trout of all shapes will love this crawdad/leach hybrid.
It's nice to have a few "guide" patterns in your repertoire so that you can fish them with confidence and replace them with ease. The Guide Sculpin is just that.