Magnificent Foxface

Snapshot: With a striking white face adorned by a bold black band, its body is a mesmerizing blend of contrasting white and dark brown to black hues. Each fin is elegantly fringed with vibrant yellow or red accents.
 
Other tidbits: Can grow up to 20cm or so. Restricted to the northern and western parts of the Indian Ocean, off the coast of East Africa.
 
Bare bones must know: Live-rock fish-only system, fish-only system, or reef aquarium with care. Wear gloves when handling, their venomous spines can inflict painful injuries.