spiny box pufferfish.

[naesco]

Originally Posted by medhatreefguy

You can keep Tangs with a Spiny Box Puffer. You can also keep Angels, Wrasses, and the list goes on. It's only as "drab" as you want it to be.

The puffer gets to be 14 inches so you are limited in the size of fish you can keep.
I would agree that you can keep some tangs that are less demanding of water quality but not most of them. Angels are fussy and require pristine water conditions.
As the article notes the species are messy and you would require frequent water changes to keep the water clear.
Travis might want to keep the articles in mind if he chooses to keep them.