Scientific name: 
Chaetodon ulietensis
Distinctive features: 
White fore and mid-body with bright yellow rear. Pair of diffuse dark saddles across back. Black spot on tail base.
to 15 cm (6 in.)

A pair of wide, black, diffuse bars, or “double saddle”, is how you can distinguish this butterflyfish from others. The Pacific double-saddle butterflyfish is white with thin, black lines on the body. The back fourth of the body is bright yellow and has a black spot at the base of the tail fin.