I think that midas get a bigger hump. I had a 10" male that had a bigger hump than any RD I've seen. It's going to vary from fish to fish too. My LFS always has them mixed-up.
i have a rd for sale if anyone is interested im new on this site i dont know how to put pics and my fish on here like you guys have your littel photo with your screen name and the kind of fish you have can anyone help thank you