Yellowback Fusilier Caesio xanthonota

The Yellowback Fusilier is a tricolor of yellow, blue and white with a slim body and large eyes, native to the Indian and western Pacific Oceans from East Africa to Indonesia. The yellow tail has white edges.

A shoaling fish, it grows to 40cm long. Diet is zooplankton. The name "fusilier" for the genus (with Caesio meaning blue) is likely derived from the blue and gold helmets of the French fusiliers since the genus was proposed by a French naturalist and the type specimen is the Blue and Gold Fusilier, C. caerulaurea (cf. Soldier Beetles and Military Macaw, both in green and red "uniforms").