Looking for some advice on feeding a Naso Tang. I added one to my tank 4 days ago and have yet to see him eat. I have tried brine shrimp plus, pellets, flake, spiralina and seaweed select all with no luck. The fish is acting normal, not stressed at all; just swims around all day looking fine but I have never seen him eat. I have had some algae buildup on some of my rocks; maybe he is nibbling on that; although I have never seen him do it. I am at work most of the day so dont have a clue as to if he is eating algae during the day. I have also noticed that when he was first added to my tank his stomach seemed empty and now had some fullness to it so he must be eating something..a little confused. Any ideas as to trying different foods that may work? All water levels are excellent. Thanks for any help.