New Orange Stripe Bristletooth Tang Behavior

[JeremyWW]

I purchase this tang today and he has been in the tank for about 6 hours now after a 1.5 hour drip acclimation. He is eating readily and swimming out and about. For the last 15 minutes or so though he started racing back and forth across the front glass.

Is this normal behavior or should I be concerned?

Here is a video of it.

https://www.youtube.com/watch?v=c8QHZGeA_zY