All 4 females are looking pretty fat... bought them from the store about 2 weeks ago, not sure if they were already pregnant..?? guess i'll just have to wait
If you look at the females' belly, if you see a black shadowing, it's pregnant. Guppies will eat it's fry, so provide plenty of plants and hiding spots for the fry to flee to.
With guppies if the females wernt seperated from the males when young they are almost definietly pregnant even if the havnt been with males for a while. Hence why if you are breeding good guppies you need virgin females.