If You get 2 maroons that are nearly the same size, they could beat each other up pretty badly in order to establish their dominance. Usually w/ mated pairs in Maroons, the female is quite larger than the male. Also concerning the saddlebacks, according to Joyce Wilkerson, they can be rather skittish when they're first introduced into a new home, and have been known to dash about madly until they crash into the sides of the aquarium if someone walks by late at night.