Welcome marine reef fish lover. There are at least 4,000 species of fishes that inhabit our coral reefs. An estimated 18% of all them live on coral reefs and associated habitats of the Indo-Pacific and Atlantic oceans. Although it would be impossible to include all of them in this page. This page attempts to include all fishes that are likely to be collected and cared for by many hobbyist and observed by the many divers all over the world. It is important to know that reef fishes exhibit a diverse array of life styles to cope up with the living together in the crowded and competitive world of the reef. Some species are always found in groups while others occur in pairs or are solitary. Schooling is a strategy adopted by many species that live or travel in open water away from the protection of the reef. A large number of reef fishes are territorial. Territorial species typically guard an area encloseing one or more resources of food, shelter, or potential mates or nesting areas. Vision and color are importance in the social lifes of most species of the reef fishes. Distinctive color patterns enable each species to recognize its own kind as well as the rank of an individual within the social system.