I have two pregnant platies and a couple of days ago I saw one fry swimming about in the tank so I put it in the hatchery that I had bought when I first found out that my fish were pregnant. Because I have two pregnant fish I am not sure which one gave birth to that fry, as they both still have the gravid spot and are still quite big. I moved the baby platy to another tank, and put one of the pregnant fish into the hatchery because I was hoping that it would give birth over night. I woke up that morning and there were no fry in the hatchery. Both the female platies still look pregnant and because one of them must have given birth to that fry, that fish must be having some more very soon. That morning I let the platy that I put in the hatchery out because it was getting too stressed. The last night I put it in the hatchery again (the platy with the largest gravid spot which I thought was more likely to give birth than the other female platy which has a smaller gravid spot) and woke up again this morning and no fry. Today the other pregnant platy has been hiding behind the filter and the male has been chasing/staying with her, should I put this one in the hatchery tonight as she has the white spot, and a fairly big gravid spot. One of these platies must definitely be having their fry soon as one of them must have had one a couple of days ago.