I know that mollies are livebearers, so I am REALLY confused as to why, after removing the male of the group, from the tank one of my females showed signs of being pregnant. While I was researching, I found that they can save the semen for quite a while (he was only taken out about a week previously) but she never had her fry. She seemed to explode, literally. There was an egg sack extending from her very large abdomen, but it looks like the fry never really developed. Is this possibly caused because I removed him after she was ready to recieve the sperm but didn't have access to it or is this some really strange virus/disease that I haven't seen before?