Orange-shoulder Tang

Snapshot: Also known as the Orange-epaulette Surgeonfish and Orangespot Surgeonfish. This stunner transforms from a vibrant yellow juvenile, into a sleek gray adult. It has a striking orange patch above its pectoral fin. 
 
Other tidbits: Can grow up to 35cm or so. Ranges from the coast of South-East Asia, eastwards, to the tropical waters of the Pacific Ocean. Its fresh dark gray/blue ring encircling the orange bar pops like neon in specific lighting!
 
Bare bones must know: Live-rock fish-only system, or reef aquarium with plenty of swimming room. Larger size aquarium needed.