purchased the fish about three weeks ago maybe more im not 100% sure. I purchased it because i noticed that i had one aiptasia anemone in the tank. Once introduced the anemone dissappeared which was good. However since then it hasnt eaten any of the food that ive given the fish. I give all the fish ROD's food which has practically everything in it and flake food. All the other fish eat it. However he does not. Early on i noticed that he picked at the live rock quite a bit. Figured he was eating off there. Since about 1 week ago i havent seen him eat anything. What do you think. Should i be concerned or is he eating and i just dont know it or what shouldi do.