Help with Sailfin Molly Fry

[guns286]

I bought 4 Sailfin Mollies about a week ago. My LFS told me that there were 2 pregnant females and 2 males. I have been in the hobby for years and have never had a fish, at least to the best of my knowledge, lay eggs or have fry. Well, while I was looking at my tank yesterday I saw a tiny version of a black Sailfin Molly! After further inspection I counted 2 more hiding in different areas of the tank. I have read other threads on this site about seperate fry tanks, but I think I'm past that point because they are way to small to catch. I probably should have put the females in a seperate tank BEFORE they gave birth. What am I supposed to do know? I have a 72g tank that is populated with other fish (about 12 tetras, 1 guppie, 9 Amano shrimp, 2 rope fish, and the mollies) that I am afraid will try to eat the fry. Today I can only find 2 of them. I hope the other one is just hiding somewhere I cant see it. I also read that mollies can have upwards of 100 fry at a time. Why am I only seeing 3? HELP! I feel like a grandfather who does'nt know how to take care of his grandkids.