Hmmm, i'm just worried about getting even more fish in such a small tank because i do not want a big bioload. I might take out the male, as suggested, hoping that the sperm is already in the female and without the presence of a male she'll use the stored sperm. I also do not want to get more females because if they do give birth, I'm afraid that the other females will eat the fry out of jealousy or aggression.