When will my female guppy give birth

I have 2 small guppies in a small 2.5 gallon minibow. Do you guys think thats an ok amount for a 2.5? Also, I have female flamingo guppy, and a normal male guppy. Even though the male is not a "flamingo" guppy, can they still reproduce? I think my female guppy is pregnant because she has the black spot behind her stomach. How long will it take for her to give birth, well what i mean is in how long, and how many fry do they usually have? Also, if I keep the fry in the same container, will ALL the fry get eaten u[, or only some?

Iceni - glad to see I finally changed your mind on the guppy breeding with other livebearers thing. It's kinda creepy how they do that, isn't it?

That being said, Seabass, your tank truly is too small to handle all the fish and the frog you have in there now - to add babies to it will simply be too much for your bioload. You will see your ammonia, nitrites, and nitrates peak, which will throw your pH off, which will cause many, if not all, of your fish to die. I'm begging you, for the sake of your fish, to get a larger tank. They have no control over their lives when they are in your care - you have taken them on as your pets, the least you can do is properly care for them.

You cannot even think about successfully breeding guppies in anything less than a ten-gallon tank, and even that is a bit on the small side.

Ideally, if you really want to keep guppies in that tank, look into three male only or female only guppies. Do not mix sexes, as they WILL reproduce.