Hi. I recently purchased a Koi and the breeder told me that the Koi is pregnant. The fish is really fat so we assume that she is carry eggs. We have had her for about a month. Now she is hidding all the time and sits at the bottom of the pond. I noticed that her eyes are now poking out of her head. She has not come out to eat for 2 days. Does anyone have any expertise as to what is going on with her? Thanks!

Do the eyes look like there bulging out if so its popeye.
Popeye is closely related to dropsy because of the build up of fluids.
You will need a pond bacterial med.
http://www.flippersandfins.net/pop-eye.htm