After a few weeks I pull the fry out and put them in a fry holder so that they are in the same water. From my understanding, they are
very sensitive to drastic water changes at that point. The first pic is my baby tank of yellow labs and peacocks. You can see a couple of different sets of spawns. The second is some peacocks in the fry holder. And the third is a picture of a wiggler, still with its yolk sack. If I lose track and pull them too early, the mom will suck them back up and hold them, then I put her back in the big tank until they are done baking.
I agree, that with enough hiding places, if left on their own, a few will make it to adult.
congrats, and have fun.