Forgive me if these are silly questions, I'm a total newbie when it comes to roaches as pets. Is it normal for roaches to fight? I have a small group of Dubia which includes 2 mature males. Tonight they just started fighting, I mean really biting each other and chasing each other around their container. I've never seen them do this in the time I've had them. Do other roaches fight too? Is this mating competition or territorial behavior? Do I have to separate the males?