lyertail anthias

I have other species in the tank that seem to be doing fine... But randomly, the Anthias Lyertails keep dying one by one... Please help! I have dosed the tank with copper already and been adding Metroflex to their feeding. But I can't seem to figure out what it is

Hey Everyone, My current setup is a Reefer 350 (73 gallon display - not including sump) and my fish stock is: 2 Snow Storm Clownfish 1 Yellow Tang 3 Lyretail Anthias 1 Royal Gramma My most recent addition (about three weeks ago) was the Royal Gramma. He spends most of his day hovering around...

I am considering a group of 10 Lyertail Anthias from LFS. One of the Lyertails in the tank appears to be career of popeye disease (see attached pics). Should I assume that the rest of the Shoal are infected too? What’s the best course of action at this junction ?