After becoming impregnated, it takes a month to a month and a half for the balloon mollie to give birth. Raising the temperature of the fish tank to 80 degrees is a good idea, as is feeding her brine shrimp.
Balloon mollies will get pregnant after an interval of 60-70 days. They can give birth to 10 to 60 mollies at a time. It gets too fat during this time. If we can raise the water temperature, it will urge the process.