Thanks for the prompt response, Jay.
The powder brown was about 2.5in, not what I would consider thin… admittedly it’s my first real experience with a tang. He didn’t seem labored, swam around just fine, ate without issues and would graze on algae throughout the day.
I was gone for about 12ish hours before noticing the tang laying on the sand bed dead, so I was unable to see any symptoms prior to his death. They did not eat in that 12 hours, but surely it wasn’t starvation… upon looking at the body, I noticed no injuries, spots, or abnormalities except the fact that it was dead.
I had the tang for two weeks, not long, and admittedly it was not quarantined. Hopefully not a fatal flaw.
Other tank inhabitants are some snails, corals, 4 damsels, a Valentini puffer, and the FoxFace.