Reef Fish
So I have a 125g tank with 5 chromis, 3 firefish, 2 clowns, a Black Capped Basslet, a Scooter Dragonet, Mandarin Dragonet, a Red Sea Sailfin Tang, and a Purple Tang. I want to add a Kole Tang. Is this doable? And if so, what should I do and how should I do it? The other tangs have been in the...