That's a beautiful female you got there. With my old pair my female was the aggressor of the two even though she was 2-3 inches smaller. Luckily the male was big enough to take the damage and handle her or else it would've been bad. Good luck with the new male and take some pics.
the male was prob smaller..but trust me a male rtm is one mean mutha.. me and my bro used to breed them.. and sell them to local fish shops
90 or bigger..