From what I can tell this is just a color variation on a Matuka Sculpin. The main differences from what I can see here are:
Traditional sculpin patterns have a spun wool head to keep it on the bottom rather than deer hair (sculpins are bottom-dwellers)
The traditional matuka calls for a singe broad, webby, rounded hen hackle or schlappen rather than a saddle, lashed to the hook zonker-style (as you have here with the saddle). The idea is to provide a broad profile to suggest larger prey.
Not saying one is better than the other, just pointing out the differences between the 2. I personally tie a variation of this fly with a palmered hackle body and marabou tail to imitate egg-sucking sculpins. It's the best steelhead streamer I've ever used.
Just to illustrate what I'm talking about wth the hen hackle: