yes it will work get them both at the same size and they will fight but they seam to have equal aggresion levels and strength .my rt is a warrior he is the smallest in my 125 cichlid community tank he picks fights he cant win constantly hits and runs on his tank mates.the rt is 1 of my favorites he stays beat up and ugly i think he likes it that way and i like to watch him live like this the battle never stops but i have not had a fatality in14 months he takes the fight to the max and retrets.IMO i wuold keep the butti in a year the rd and rt will be about the size of butti now then get a 125 and put them all together lol