In the past few days, I have noticed that there are some chunks of my colt coral missing. I am not sure if something is eating it or if it is just unhealthy, but I would bet that something is eating it. One of the branches is just barely hanging on and I found one on the sand bed this morning. In the tank is a yellow tang, a hawkfish, two damsels, a maroon clown, a cardinal fish, and several hermit crabs, but I have never seen anything eating it or picking at it. All other corals in the tank are doing very good, and water quality is high. Do you think somthing could be eating it?