I currently have blue hippo, blonde bask and purple tangs in a 150g tank and was considering adding a lole tang to the tank. Just love the look and their constant activity of "picking".
Can this be done safely?
You appear to be a fellow victim of auto-correct. I assume you meant blonde Naso? 150 is a bit tight for a hippo and for a Naso, but compatibility ought not to be a problem. Of the existing three, the purple would be the one to watch, but generally as a different genus, bristletooth won't get a lot of grief I'd think. All fish are individuals though. Fatten a Kole up in QT, use an acclimation/socialization box and I think you'd be good.