So my fish have been having lots of fry lately...molly and guppy fry. (purebred guppy, purebred molly). I saw one fry just swimming in my tank and one of my mollies was chasing it..so I scooped the fry out and put it in a breeders net. I didn't have any fry at that time, so it grew up for about a month or two alone. Now I have 3 guppy fry, I moved the unknown fry into a breeders net with the guppies and she/he is picking on the guppy fry. I don't think this unknown fry is guppy...looks much like molly, but I can't promise it's a molly so possibly a guppy. Is this a terrible problem? Should I separate them? The unknown fry is nipping at the guppy's fins. I fear that if I separate them again the unknown fry will hate other fish it's whole life because it grew up without anyone. Is this true? How can I stop this? How to socialize fry? HELP???!!!!!