Juvi chevron is looking good and behaving very well. I have not yet had the opportunity to attempt to house a pair or two chevrons in the same tank. I think that, to start, if the two are introduced at the same time, that it could work for a while, but for how long? And how difficult will it be to remove it if necessary. A large fish population will help to distract from intra-species aggression. Your tank is big enough to try.