He is now eating all of my zoos. I can't believe this. I've been trying to catch him for two days now with no luck. I feed the tank 3-4 times a day. I had a big rock with over 200 polyps of zoos and I think there are like 50 left. He will not go in the fish trap with food. He likes the zoos better. I don't know what to do. There are to many corals in my display tank for me to start moving/removing rocks. After this guy is gone, I will never get a Hippo again. That also goes for a purple tang as well.