I've got a mature male Sailfin Molly whom I bought with a mature female. I was hoping to breed them, but the male is very aggressive toward the female to the point of killing her. This has happened to three different females. He isn't mean to any other of my fish. I don't want to add another female for fear she'll die. Is this normal? Attached is a picture.
http://badmanstropicalfish.com/charts/tank_pics/photo48.html
http://badmanstropicalfish.com/charts/tank_pics/photo48.html