So what happened? I have about 12 tangs in my 200 gal tank (Scopas, Blue, Brown, Hippo, Naso, Chocolate, Clown, Atlantic and Sailfin) and just got a purple and orange shoulder tang. The new guys were in isolation box for 3 days but then started to pick on each other so i released them. The scopas rang was immediatly all over the purple tang. I turned the lights off. I really hope they dont kill each other at night