My Silver Dollar has a black spot on both sides of body in the same spot. It almost looks like it indents a little bit...weird part is it's not always there, some times it fades and other times is dark...I've tried to take a picture and he won't stay still (camera shy)
I looked it up and it kind of looks like what they call a chemical burn but I haven't put any chemicals in the water other than the water conditioner.
Anyone have this happen to their fish?
I did a test on the water and everything is fine, even the pH, nothing has changed.