But then again it sometimes does...
IMO o wouldnt try a PAIR. Ive got a pair in my reef, and the female perc is a right nasty piece of work to me and any new additions to the tank. I just find females in pairs very aggresivr in general.
I'd say one would be ok, but not a pair. Ive got a black & white clown with my horses and they get on fine.
