I currently have 2 pacific cleaner shrimp, a longnose butterflyfish, hawkfish, coral beauty angelfish, and 2 clownfish. At my LFS, there were about 20 different types of frozen cubes... I read the diets of each of my fish, and found mysis shrimp and meaty foods to be in all the diets, so the Butterfly and Angelfish mix seems to work.
The ingredients are Artemia franciscana, mysis, krill, mussel, squid, spinach, sponge, Spirulina algae, menhaden oil, sodium alginate, vitamin premix: wheat flour, vitamin A acetate, cholecalciferol (source of vitamin D3), vitamin B12 supplement, riboflavin, niacin, calcium pantothenate, folic acid, menadione sodium bisulfite complex, pyridoxine hydrochloride, thiamine mononitrate, biotin, inositol, L-ascorbyl-2-polyphosphate, betaine, d-alpha mixed tocopherols (source of vitamin E).
This also seems to account for the variety required in a fish's diet... Should I get other brands of food?