Schooling Bannerfish

Snapshot: With a sleek, flattened body, its dorsal fin rays stretch into elegant white filaments. Its canvas: a pristine white, etched with bold black diagonal bands. Past the second stripe, bursts of yellow adorn the dorsal, caudal, and pectoral fins. 
 
Other tidbits: Can grow up to 21cm or so. Widespread across the tropical waters of the Indo-Pacific region and the Red Sea.
 
Bare bones must know: Live-rock fish-only system, fish-only system, or reef aquarium with care.