Filefish in general aren't considered reefsafe I don't think, i'm pretty sure it's just the matted filefish that eats it and they do nip at other corals mine nips and gorgs ,zoa's and my brains but if I keep it fed with mysis he's good and he's gettin better I think in time he won't touch anything. Can't say for sure he's devouring the aiptasia but o know as soon as he was added it dissappeared . If you get one look into if it has to be a matted or not and their very fun fish to watch very slow and very very ugly but beautiful at the same time
