i have a breeding pair in a 130 gallon. but i have another 130 gallon with just a male. do you want a breeding pair? if so, then they should be the only fish in the tank.
Every fish is different, I had one 8" jag that was really aggressive, an then my other jag is 12" and is house with a red devil, gold severum, and a parrot fish and a couple of gold fish that were intended to be feeders but never got eaten.