I got a pair of Bolivian rams a week ago, and it's one male and one female. All last week, the two get along quite well in the new tank, but from time to time, the female chases the male down; despite the quarrel, the two still hang around very often. Today, I noticed that the female is always hiding from the male, and whenever she swims into the open, the male chases her off. Anyone know why this is?