divingne1 asked if they have their own tank.
No, they're in a 6 foot community, surrounded by voracious tetras and fearsome corydoras. Obviously this spawn won't survive, but
1) at least I know that I have a compatible pair
2) they will improve their parenting skills this way
3) I am learning a lot through watching.
Re (2), perhaps mother will learn that chasing father to the far end of the tank may not be the ideal model for shared parenting. Equally, father may learn that eggs are a precious gift, not (if my suspicions are correct) snack food .
Anyway, for today's update, the little wrigglers are still being guarded in their little hole. Occasionally one makes a break for freedom, and may get as far as a half-inch away from the nest before mother picks it up and spits it back onto the little writhing pile.
If/when they become free-swimming, she will be tearing her hair out.