i can only tell you what happened to my jags
once you have moved the babies away from the parents thay seam to forget about them and if thay go back in thay are food.younger brothers and sisters also become food for the older ones
i have so many of these fellas i tryed a few things,the only things that i worked out are
letting the parents look after them thins them out but you get only the bigger ones left.
thay grow a littel bit faster, when fed live food(but it cost)
flake and blood worms, a littel bit smaller (a bit chaeper)
flake only, small (cheep)
and the bigger the babies get the naster the dad becomes,take them out and he settels down again
she will lay eggs but he wont have anything to do with it until there is no young in his tank