Hi, I have had two fish die in two days and now a 3rd is looking ill. I don't know what's wrong with them. My tank parameters are normal and I did a water change last night just to see if it helped. I bought these fish 2 weeks ago from Bluezoo....they looked healthy and normal for two weeks and then the day after the warrantee expired...I noticed the anthias had faded splotches and seemed distressed....an hour later it died...next day the same thing happened with my angelfish and now my yellow eyed khol tang is looking stressed and has the faded spots....I've never had this problem before...any clue what's wrong?