yes. My first copper-band had it. How are you QTing? Mine got worse and worse while it was in QT, but the fish was fine. The QT's water quality wasn't exactly perfect however.
It cleared up within a couple weeks of going in the big tank with good water. No other fish in the display have ever shown symptoms. IMO, if the fish is eating and there's no other confounding issues in the tank (parasites, aggression, etc.), it's not really something to worry about and should clear up on it's own.
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