Goldfish Disease...

Hello all,

I have a goldfish that developed several bumps over a year ago. I was
told to add salt, which I did. The bumps almost went away completely but
I just noticed that they were back. I wonder if the colder weather here
in central Texas is a factor? Perhaps he will be better as it warms up
around here? Should I remove him from the pond so to not infect the
others? -sniff, sniff...

Thanks in advance,

Billy Baty