2 goldfish problems

I used to have goldfish that all seemed to change color. I brought
brown or black ones in hope of putting them oustide in the spring, and
they all turned gold before spring came. I also had a gold fish that
turned white. It may be and infection, but it could be changing color.
Taking the proper precautions for a sick fish may be better, I mean,
it's better safe than sorry.

AD

William Burbul wrote:
I have 2 goldfish in 55 gal tank with 2 filters. Lately 2 strange things
seem to happen. the smaller fish (about 3 inches long) has started to get
get a dark brown color all over it. It still seems to act normally (eating
and swimming around and pooping) but what is this dark brown color???.


The other fish is about 4 inches long but lately has puffed up to the size
of a tennis ball and doesn't seem to eat. What's up with this?


tank looks OK and tests pretty normal except for nitrates.