pregnant platy not giving birth

i have a pregnant platy i just bought a few days ago. it's obvious she's pregnant cause i could see her belly bulging out. i bought her along with 2 other pregnant platies, and when i transfer them to a container to acclimatise them with my tank water, the 2 platies gave birth as i spotted more then 10 live fries in the container. but after i transfer all of them into my tank, one of the platy obvious still having her babies inside just won't give birth. why is that so??? it's been 4 days already.

and why does platies always give birth in the plastic bag when i bought them. will stress cause them to give birth early??

PLEASE HELP!!

Maybe she just got pregnent?? e.g the day you bought??

cannot be possible leh... her tummy was bulging out when i bought her

Originally Posted by ah_hup

cannot be possible leh... her tummy was bulging out when i bought her

Hi bro,
has the platy given birth already? Cos my gf also kept platies as well and she also did mention about sometimes the tummy bulging also, but catch out also never give birth. One gave stillbirths though.

Up the PH and she will let them go.
I had platys in my planted tank with PH of 6.6 and they were not willing to drop the frys.
Add salt and let the Ph go above 7.5. They will let go the frys.
good luck