Last resort guys. I've had a fish that has been ill for some time, getting worse and worse. Originally unable to swim properly but whirled itself to either the top or the bottom of the tank. Now it cant swim propery, still whirls arround but has an arched back, so much so her tails level with her head. Chemistry's fine, one noteable thing is that she had a batch of 11 offspring arround the time she got ill, and about a month before that another 6. She is still eating, although I have to put flake and her in a net so she doesn't have to swim for it.
Any ideas before I get her to meet her maker?
Thanks
Greg
Any ideas before I get her to meet her maker?

Thanks
Greg