"Reef fish" refers to a variety of fish species that live in coral reef ecosystems. These fish can be found swimming in the colorful reefs and are dependent on them for food and shelter. Full definition
You will be able to experience the breathtaking sight of up to majestic back and white tip reef sharks In addition you can also encounter a multitude of different species of tropical reef fish. (reefsafari.com)
When snorkeling, a wide variety of colorful reef fish can be seen. (captainnapali.com)