I'm not at the tank right now, so I can't check it, but last check things were fine. Nothing has changed. I watched the fish for a while, and no other fish are chasing her. No fuzziness at all with the fading color, so there aren't any external parasites as far as I can see. All the other fish in the tank seem just fine. I'm baffled right now. I read through a bunch of things to see if I could figure out exactly what is wrong, but there is nothing visible for stress or illness. Are there any general medicines out there? I know treating what you don't know probably doesn't work out too well though.