White Face Butterflyfish [Chaetodon mesoleucus]White Face Butterflyfish (Chaetodon mesoleucos) The White Face Butterflyfish is a distinctive Red Sea butterflyfish with a pale white face, contrasting dark rear body and fine striping through the flanks, giving it a bold and elegant appearance in marine aquaria. In the wild it is found on coral reefs in the Red Sea and Gulf of Aden, where it is usually seen in pairs. In captivity it does best in a well established marine aquarium with plenty of