I like the "OKIKO" Platinum....it say's its for digestive improvement, high in astaxanthin (great for FH) and it contributes to color and head growth. There's also the OKIKO quick red that came with the platinum and it brought out the red in my FH x10 and he's grown tremendously over about 2-3 months of feeding
It's actually not that good of a food, it claims minimum 60% protein in it, that's too high and definitely not good for digestive system. Many foods have astaxanthin in it, synthetic or natural is the more important factor than quantity. Food can not directly improve the hump. Fish would grow on lower quality fish food as well.
also I feed him raw gulf shrimp without the shell and/or brine shrimp maybe once or twice a week as a snack
Not a fan of raw food either. Pallets are much safer and better balanced nutrition wise. Once a week wouldn't hurt overall nutrition though.