Benitochromis nigrodorsalis are monogamous pair-bonding mouthbrooders that continue to take their free-swimming fry back into the mouth at night and when disturbed. It's not recommended to strip them of their fry prematurely, as one would a haplochromine. If you leave the fry with the parents, you're in for quite a treat. They make excellent parents.
All the best,
Have you fed your fish a shrimp today?