The Spot-naped Butterflyfish (Chaetodon oxycephalus) is a species of butterflyfish (family Chaetodontidae). It is found in the Indo- West Pacific region from Sri Lanka to Queensland, north to Indonesia and the Philippines. It grows to a maximum of 25 cm (9.8 in) long. The body is white with thin vertical lines on the sides and a large black area in the upper back. Very similar to the Lined Butterflyfish (C. lineolatus), its vertical black eyestripe is broken above the eye and there are additional black and orange lines and spots in the yellow dorsal and caudal fins.