Is she still big? It does look alarming when they're pregnant - and like they're about to explode. Before birth, they're abdomen will look squarish - then babies are born!

Lots of things can go wrong with pregnancies. So no, it has nothing to do with your removing the male. Babies develop in the abdomen because the eggs have already been fertlized by the sperm. If not, there would have been no developing babies and no fattening mom.

Hi,

If your molly is stressed she will sometimes drop eggs that are not developed or not fully developed. If the eggs look like they are close to being fully developed..sometimes the development will continue and they will hatch like egg laying fish. If the development isn't that far along.....they will just fungus so its best to remove from your tank. This happens sometimes with livebearers...so no it is not a virus/disease.

There are many things that can cause stress and for this to happen. Moving the fish itself, or maybe water conditions. You mentioned removing the male...perhaps this caused stress to the female...if she was chased around the tank at that time. This also sometimes happens if its her first batch of fry.

And yes the female can have several batches of fry after the male has been removed. Perhaps her next batch of fry will be more successful.