HELP! My platy or balloon belly molly is gregnant

[onewayticket]

Hello every friend,

I found a fry in my tank. But I don't know which one gave the birth. I have three female platys and one female balloon belly molly. All of them look like pregnant. Can I put all of then in one breed box until I find out which one gives the birth?

It's said that one pregnant female will give 20+ frys. How long will it take for her to give all the babies? In one day or several days?

Thanks in advance.

[Mitchafishaboo]

How long is a piece of string? It's a variable in time as to how long it will take, if you look out for the fry and keep them they will start to look like the mother so you'll know then