Texas are mean s.o.bs to beging with a breeding pair is nothing short of a body builder with a 3 year olds temperment. I would suggest if you want to keep the breeding pair set up a new tank just for them, or keep them were they are and set up a different tank for your other fish, or pick which one of the pair you like best and get rid of the other one or put it in another tank and problem solved. But even if you put super tough fish in with them when they are breeding they are still going to harass beet, and kill, what ever else is in there. Or get beet on them selfs depending. I would personaully give them a tank of there own texas are awsome fish