Aptasia Eating Filefish

Snapshot: Also known as the Matted Filefish, its body is a dynamic blend of mottled green, brown, and tan hues. It is a camouflage masterpiece!
 
Other tidbits: Can grow up to 9cm or so. Native to the tropical waters of the Indo-West Pacific region including the Philippines, Sri Lanka and Indonesia. If you're looking for an aiptasia assassin for your aquarium, the Matted Filefish is your ultimate weapon. Their tiny scales create a rugged shield, earning these species the alias 'Leatherjacket.'
 
Bare bones must know: Live-rock fish-only system, fish-only system, or reef aquarium with care. Mature or well established aquarium only with large amounts of algae growth. Use a container, rather than a net when moving them.