Pakistani Butterflyfish

Snapshot: Also known as the Red-Tailed Butterflyfish. This beauty flaunts deep brown to black tones with speckled scales, a bold mask-like head with white and black bands, and a striking tail of red, black, and white stripes.
 
Other tidbits: Can grow up to 18cm or so. Distributed throughout the East Indian Ocean, West Indian Ocean, Australia, Japan, Indonesia, and the Central/West Pacific.  This species is like a hit squad for glass anemones (Aiptasia).
 
Bare bones must know: Live-rock fish-only system or reef aquarium with care. Well established and mature aquariums only. Top notch water quality required.