How old do black mollies need to be to have babies?????? HELP? My black Molly fry have been in a breeding trap for 5 months since they were born. I released them 5 days ago and now one of my fry is looking pregnant with the square stomach, the white anal hole and constantly hungry exactly how her mother was before she had her babies. I can't imagine babies being inside this Molly she's only a bit less then an inch. But she's showing all the signs... CAN THEY BREED WITH SIBLINGS? WILL THEY HAVE DEFORMITIES?