Not much difference between males and females. Males are slightly larger. Relatively easy to breed. Mine spawned in a Zoo Med floating log that sunk. They are actually substrate spawners. No need for shells. Can be very nasty and territorial, especially when spawning and protecting fry. They do better in a species only tank. Spend most of their time near the bottom of the tank, so you probably could keep cyprichromis or paracyprichromis with them. The cyps and paracyps will occupy the upper levels of the tank.