bonded pairs

I have a bonded pair of DaVanici (can't remember exactly) clownfish that I would like to sell, not sure if they are a breeding pair (I don't think they are) since I have a lot of rock work and coral in my tank and if they are it's out of sight. Pictures attached. $100 Local pickup in the...

I am considering getting a flame hawkfish (Or a bonded Pair) for my tank. I had a 5 yr old Pixy Hawk that I really enjoyed but it died. I know some “bonded pairs” of fish can dislike each other once they mature. Is this true of Flame Hawks or do they usually stay tolerate of each other? Also...