Hello, new to this site and new reef tank owner. I recently lost 2 anthias. It started with a chewed up looking tail and then a loss of color, no eating and then dead. It looks like my other anthias are starting to show similar signs of the tail damage. Any ideas what this may be? I have not seen any other ls acting aggressive. I only have some clowns, chromis, dottyback (beyond my Anthias). Any help/advice would be great!