First off,you want to get a variety of foods for them.I use frozen brine plus cubes,mysis shrimp,and brine plus flakes,and once or twice a week i feed them live brine as a treat.I hope this helps you out!
I do a lot of cyclop-eeze, frozen brine shrimp, baby live brine that I hatch myself, algae flakes, algae sheets, meaty flakes, shrimp pellets... etc etc.. varity is key!
You could, very fine dice on that though and make sure not to overfeed......I think the raw shrimp could cause a small spike if to much went uneaten. I feed a variety of the following: Formula One pellet, Formula Two frozen, and mysis.