i have a 125 gallon with 2 ghosts and ammonia is at 0 nitrate is 0 ph is 7.0 he is eating and swiming normally except its more like his sides are fading the other ghost is perfectly normal color n all the ghost that is fading i just purchased today by the wayCould we please have some more info?
Tank size, what else is in it and how long has it been set up? Is it cycled? Water parameters would be most useful (ammonia/nitrite/nitrate/pH)
How long have you had the fish in question?
Is it doing anything else other than going a funny colour? Is he still eating, swimming normally etc? Any lethargy, is he behaving oddly at all?
Is the white fuzzy or slimy? What exactly does it look like? A picture would really help us.
Thanks!