Went and bought 5 guppys yesterday, 4 female and one male. Had planned on getting a breeding box or a separate small tank in a couple of weeks for the inevitable fry! I thought one looked pregnant last night but I wasn't 100% sure and they were in seperate tanks in the shop. So imagine my suprise when I went over to the tank to look for my new bristlenoses to find a fry on the bottom of the tank at the front against the glass. There is still one or two I have seen swimming around and getting chased but they managed to swim away and hide again. I have a three foot tank and it is still very lightly stocked and has lots of hiding places so I'm hoping I may get one or two survive.
I'm now convinced at least one of the others is pregnant too. If not all of them!