The Eight-banded Butterflyfish or eightband butterflyfish (Chaetodon octofasciatus) is a species of butterflyfish (family Chaetodontidae). It is found in the Indo- west Pacific region from Indonesia and the Philippines via Papua New Guinea and the Great Barrier Reef to the Solomon Islands, Palau, and north to China; it extends into the Indian Ocean at least to the Maldives, India and Sri Lanka.