Scientific name: 
Chaetodon kleinii
Distinctive features: 
"Dirty" white head and diffuse central white bar. Black lip and ventral fins.
Size: 
to 14 cm ( 5.5 in.)

Of the lighter colored butterflyfish, the blacklip butterflyfish is the only one with black lips. The blacklip butterflyfish has a white to brown head with a wide, brown, diffuse, central bar. Its back half of the body and tail fin are brownish yellow in coloration.