They lay eggs on a shell or inside a small secure formed rock hole. I find if you have 2 males and 1 female the female will court one(usually the largest) male, and if she doesnt beat him up, he will fertilize her eggs. The are spread fairly the same as a clown or damsel, but a little thinner-not so crammed. They have fairly large fry, which can start on a combo of rotifers/ newly hatched brine shrimp. keep the water clean, and change some daily. The young will cling to the walls of the tank.