Hi I'm new to tropical fish but have researched however come across something I can't find information on so I hope someone can help. We have 4 guppy's 3 female and 1 male. No sooner did we put them in was the male chasing the females and the black spot they say to look for was there and became bigger and dark. From what I read it meant pregnant. Today we come home and look at them and they still look big but don't have black spot any more it's red and sort of clear. One of the girls looks square and has a couple black dots but not the big spot like before. I guess what I want to know is have they had the fry or were they not pregnant in first place?? Or are they still pregnant? Hope someone can help.