I had a red tailed butterfly in an FO and it was the friendliest fish I ever had. It had such a personality, like a pet dog, it would come up to the glass to greet you. I've seen cichlids do this, but, this fish seemed to have a greater intelligence. Unfortunately, I lost it to a stressed out blue angel. Any experience with fish like that? I'd like to find another fish with such personality, but somewhat more reef safe, as that butterfly would eat every coral in sight. Present tank is a 220 mixed reef. Any recommendations?