From what i was told by pets at home was they get them in as young adults and sometimes they are pregnant before they come into the store. So like you say it could just be poo. So im not sure if that was her first birth.
My oldest singular fry is about 11 weeks old now. I keep watching to see if Dad is starting to make overtures towards her (if I'm right and it's a she at all!) At the moment he only has eyes for Mum!
If you want to know how long her breeding cycle is - don't forget to keep a note of the date she sprogged!
Sorry I have no experience of this phenomenon and don't know how to advise you, Tony. Might be better starting a new topic in this LIvebearers section and see if anyone else can suggest what's happening.
hi mamashack, i got a female mollie last week and i went to the tank this afternoon and she was having babies so i caught and put her in the breeding tank and i got 18+ fry. got 2 more platies to have her fry in the next day so im going to have loads of fry now.