Prognathodes is a genus of butterflyfishes. In the past they were commonly included in the genus Chaetodon. They are found at rocky reefs in tropical oceans around the world, and are mainly found deeper than Chaetodon; often a depths below those possible in normal scuba diving. They are whitish, yellow, black and dark brown, and reach 10–16 centimetres (3.9–6.3 in) in length.