Hi guys I just got my new tiny little yellow tang today. He is doing great and swimming around after I put it in my tank. Except when I go near the tank it will hide behind the rockworks. I tried to feed him but he just won't come out. I am worry that he might starve to death. But when I go away from the tank it will start coming out and eat some algae off the rockworks. Any idea how long will he get used to the tank and take the food I feed him? Thanks in advance.