I walked past my tank today and everything appeared normal. About 10 minutes later one of my Domino and Blue Damsel were attacking another Blue. I had tapped the tank to get them to stop and my special victims fish was laying on it's side and followed up with an impressive display of handicap style swimming. I moved him into the sanctuary and then noticed he is losing his color(half white and blue) so now i've got him in QT. Has anyone else experienced this?