:happyfish I had the EXACT same thing happen to me about 3 wks ago! It's probably pop eye. It's usually caused by a secondary infection. Try Maracyn. I think it's maracyn 2. Just check for the maracyn that treats saltwater, and treats pop eye. It's expensive about 17$ but it cleared up in a week. I put my female maroon in a qt to seperate her from the others. Call your local lfs, there are other meds that are much cheeper I've heard about, but I personally haven't tried them, so I can't tell you about that. I wouldn't worry too much. My maroon still looks like her eye is still a little discolored around the outside, but it's not popping out anymore, and she's almost 100% now. Good luck, :happyfish