Ha ha, well put it this way, I don't really have alot of cuc! Got a few hermits and snails, and two urchins, and there's a few peppermints in there somewhere as well, but that's it. I've never witnessed the Picasso actually eating anything but the various shells around the tank tell otherwise! But I must say it's been a model occupant in the tank so far (1 year) and is probably the most placid natured fish in there. Never seen him nip anything coral wise either. Not sure if it will stay like this forever though, still only small.