I own a 55 gal with a rose bubble tip which had divided shortly after I brought it home. A yellow stripe tomato clown occupies both of them. Two Emerald crabs also live in the tank and aside from knocking things off here and there they've been ok. Until yesterday when I watch one of them reach into the anemone and snap off a tip and eat it. There are plenty of things to eat, he should not be hungry, but I have since seen him do this again and I wonder if this is going to be a problem. Any suggestions?