can some one help me with some questions i have about my guppy, i bought her from the pet shop (wont say which yet) and the man there told me she was already pregnant and that she would have her babies in around 4 weeks, 4 weeks later no babies, this was the first time i had ever seen a pregnant guppy, so i didnt really know what she would look like just before she was due to have her babies, so i waited for 4 weeks and still no babies, i got told that her black spot (aka gravid spot) would get bigger and bigger the further along she is in her pregnancy, but this spot just stayed the same, so i put oe of my males in there with her (the other female guppy died :c ) i thought well i may as well just put him in there to see if he can get her pregnant, they have been in the same tank for at least 3 weeks now and i still dont know if she is pregnant, her gravid spot has gotten a little bit bigger, but if she was pregnant it should be much much bigger, please could some one help me, ive been wanting to breed guppies for ages. is it possible that she cant get pregnant??