Once they get to the free swimming stage, pop them into a Tank on their own, you don't need to fill the Tank right up, only put 3-4 inches of water in, feed them up on Baby Brine Shrimp, do lots of water changes lots of feeding and they should be all good.
I used to Breed Golden Angels, untill I lost Mum and Dad and all the Babys, still to this day dont know what happened to them :oops:
Good Luck