Acclimation boxes help a ton with any size issues if you have current tang. We're also happy to help alleviate any shipping concerns you might have, our DOA/DAA is near 0%I've been wanting to try one of the Biota myself but I've heard they don't do that well shipped. And there's the size factor as well. But if you want to try the bristletooth may not pick on him because there different shaped. I put a small Vlamini tang in my tank that has a pretty good size purple and the purple left him alone.