A couple of my goldfish have enormous distended bellies. I assume they are female and full of eggs but they have been like this for a while i'm not sure if that is normal. They seem healthy and happy swimming around ith the other fish and eating plenty when I put food in the pond. Should I be doing anything about this or do i just let nature take its own course? My fish are quite friendly and will come to the surface when I call them for food so i'm keen to avoid doing anything that might frighten them or make them scared of me. Thanks.

