I love CB's but my one attempt failed miserably, he was dead on arrival. Not that I'm not going to try again soon. What's the origin of your fish? I've heard that Australian origin fish tend to have better survivability.
as you have heard they are a hrad fish to get to eat but if your s is eating just watch the type of fish you put with him i had with tangs and mine just stopped eating and wouldnt come down from the top corner of the tank. i moved the yellow tang out to another tank and he started to moved back to himselfb good luck.