Goldfish With A Lump That Looks Like A Blister

[Xiocanthl]

Hi all,

I have a Goldfish with a lump on it's side it kind of looks like a blister any ideas what it could be ?

Any help would be greatly appreciated

 

[fluttermoth]

Have a google of 'carp pox' and see if that's what it is. It's quite common and not fatal.