I have a really pregnanted mollie, at least I believe that she is. She is really big and round. She has been that way for three weeks now and the male mollies are still all chasing her.
Well...it's hard to say. Usually I'd say about a week or so, but if she's getting stressed by the males, she can hold on to fry, or she could just abort them. Is there any way you could seperate her into another tank (Preferably not a breeder net or breeder trap)? Or how many males do you have? Are they only chasing her, or do they pick on the other females too? Though a seperate tank will be the best thing for her and the fry. Then, if you have a seperate tank, you can also grow up the fry in there.