Got some zoa's my clown seems to love. He even sleeps under the rock the zoas are on. Question is, he is starting to look beat up sort of. Little black marks all over him, he is still eating but looks rough. Anything other than an anemone I can throw in there that wont per say hurt him and get him to change his mind about the new home? He is getting those marks from the zoa's right? Can they die from doing this?