Fat koi

[Audrey]

I was given several koi last May and there was this one white one that had quite a bulge in the middle. I googled it and it sounded like it might be going to lay eggs. It also said that the males would corner it and cause it to lay eggs. Anyway, it is still quite round. Any ideas?

 

[sissy]

Pregnant or egg bound .Not sure where you live but are you still feeding them .Could also be a tumor

 

[Tula]

Usually an egg bound female will bulge symmetrically ( evenly on both sides ) , the fact that this one isn't is concerning.....it could be a tumor

 

[BarbO]

Maybe a bacterial infection internally, and the fish is holding lots of fluid. Dropsy? Just a thought.

 

[Faebinder]

Tumor or infection. Likely tumor since she is not that unhealthy. Deterioration will be slow. Let the fish live the rest of it's life.