Kribs are usually very good parents, just like Lionhead/Blockhead Cichlids (which I have). However, as I found out, good parenting can take on a "psycho" approach on all other tankmates ("mum" was constantly twitching as if on an adrenaline drip feed three months ago, she went balistic on any fish within 6 inches of her curious fry (read "vultures" these days)... Its only recently I have been able to re-introduce other fish without issues to that tank.