Kribensis babies help?

a few weeks ago i noticed my female kribensis hiding under a log and my male nipping anyone who went near it .i figured they were breeding and this morning they eggs hatched .i cant count how many there are but the parents are hovering over them so they look safe they are staying right down on the gravel and in one big group do i put them in a nursery ,place a divider in or leave them be.if i put the divide in most chances are that they will fit through the holes as they are tiny or the other fish like danios will jump over which has happened to my guppies.what do i feed them?I have flake food which i crumbled and granule food which i can crush or do i need to buy liquid fry food?