Guppy mating is really quick and to see, quick approach by the male and it's all over, not like the courtship some other fish indulge in. If you have males and females together, I think you may rely on it that they will be mating.
Thanks big help now one more question i think my fish is pregnant i got it today but it was kept with other females not males can someone show me a pic of a pregnant fish ( Guppy) please is it possible she got pregnant on the ride home as i got one male (flamedra) and one female (hydra mentioned above) and they where in the same bag? please help this is my first time\?
she wouldnt look preggy if she had just been mated on the way home.just because she was only in with females doesnt mean she hasnt been in with a male.
You would have got more response to this if you had posted it in liveberers section