Feed them ideally three times a day it may be a while till they have there first feed. Mine never realise food is there until a coupe of days. People used crushed up adult flakes which is fine but fry flakes tend to be a lot better.
Keep a very close eye on the mother because she will eat all her babies if not took out of the fry's home.
You will probably lose a big amount of fry.
Last time I bred them I got 35, now I only have
around 15 left in fact I lost one tonight.
They will on average have around 30-40 fry. But WARNING they can have up to 100!
If you see some fry the mother may not be finished giving birth, she can drop fry a little bit at a time over the period of a week.
When mine give birth, I leave the mother in her original tank as it might stress her a bit more. Then when I see babies I put them in a breeder net. After about a week when they have got used to there surrounding, gradually I start to move them to the proper fry tank.
Growing to full size depends on the size they have to grow in. If they have a spacious breeder tank it can take about four months. However in a smaller breeder it can take up to around a year I'm not quite sure.
If there is room Moss Balls are perfect plants for fry do its ideal that they have some. My Molly fry seem to love it, they constantly peck at it!
Hope I helped, If there is any more questions don't be afraid to ask!