What size is your tank?
The mom's behavior is stunning. The male is just staying as far away as possible.
My tank is 11.6g, 24in long 14 wide and 7" deep. My thought process was, most of my research says they live in shallow water. I found in my 60g with apistogramma agassizi, the height of the tank makes territory larger and encourages aggression.
Also apistogramma rarely go above the first 5" of a tank. Figured I would increase their total swim space with a longer and wider tank