I've been having an issue with one of my platys. Over the past several months, its been having an issue with white patches on its body. I've been googling around, and still cant find the issue. This is Definitely not an Ick infestation, I've fought ick twice in my tank (this platy survived both times).

The Platy still eats, plays with its platy-friends, runs away from the Gourami when it decided to be a bully, and has given birth at least once. the only strange thing is, during the late afternoon about an hour or so before i shut off the light, it gets lethargic and sits behind the driftwood on the floor. It will react when i tap on the glass. Other than that, I don't see any Symtpoms.

Heres the best picture I could get. (the one on the right of course).