HELP TO ID FISH PLEASE!

[Harpo]

Hi Everyone!

So, I bought a fish on the spur of the moment to get rid of some access plants in my tank. He is doing an awsome job...problem is, because I bought him on a WHIM I totally forgot what kind of fish he/she is. Some type of TANG?

I would like to get it's aquatic name so I can research it more and find out about said mystery fish. Sorry pictures are not great but he/she is really really shy!

Any help would be great.

Thanks,