Hello again. I can't tell if one of my guppies is pregnant. I put a male in with her for a few days about a month ago. Unfortunately the female killed him while I was on vacation... He was only in her tank for about 3-5 days. I decided that my guppy was pregnant because she had a dark gravid spot, but now that it's been a month and her gravid spot hasn't grown, I'm not so sure. Could anyone tell me whether she's pregnant or not?