This guide includes all fishes that are likely to be observed by people visiting or diving on the coral reefs of the Indo-Pacific - including the Red Sea - and Western Atlantic oceans to a depth of 60m. 2074 species are listed, with each major form included, whether male, female, immature or a geographical variety. Identification characteristics are highlighted, with the text covering where the species is likely to be found on a reef and where it is found in the world, with an introduction to the habitat and how to identify fish in the wild.