ok so i took some of my fish out of the tank so there is probly about 9 total now.. i added 2 males to see witch one she would pair with one is her size and other is a lil bit smaller..she is chasingthem all over the tank and has all the fish hidding in the corner..but before i took some out and put them into a different tank she was fine and wasnt chasing any unless they got super close...what should i do now..let them pair or will she kill them