Can anyone I’d this disease that is killing my anthias. I bought 6 anthias and they are in qt. They were perfect looking. After 2 days in qt I saw this kind of red spot on one. Two days later, it died. The rest looked fine. I started metroplex treatment. Two days later another fish showed up with the same thing. Two day later it died. They are still in treatment. Can anyone suggest the correct treatment?. The other fish looks fine, but iam very worried