-keep the temp the same as the adults tank, or 2-4 degrees warmer.
-feed finely crushed flakes or specific new hatched fry food, or newly hatched brine shrimp.
-put a few plants in there to relieve stress but leave the bottom bare so it can eat the food that falls to the floor.
why dont you put a wide holed net draped under the barbs but not touching the bottom of ur moms tank, so the barbs still spawn but the eggs are saved... lots of danio breeders do it and its quite effective apparantly. loooaaaads of free bebbiees