Huh me into tangs, nah... not even, hate the way they pool. Luckily just got rid of my 2 pesky tangs....... Looking at anthias pool is so mucha nicer sight
Anyway here to answer your question, darrn yours is a powder brown tang, a acanthurus species that is much hardy compared to the powder black. Anyway as it is a powder species, it is still very prone to ich.
The pic that terryz post show the white cheek surgeon on the top while the bottom one is a powder brown. So that means darren, you bought the wrong fish laio white- cheek surgeon aka powder black is a very delicate fish that usually do not survive long. It is very prone to ich. not recommended to have them.