3 Even more colourful than the corals are the fish that live in the reef. Some are one or two bright colours, like blue or yellow. Others have three or more colours, such as blue green and pink. Some have and some have spots. One fish is white, black and yellow with red spots. The colours and patterns on some fish change as they grow 4 Great Barrier Reef is one of Australia's most popular holiday pla More than 2 million people visit the reef each year, so it has to be looked after very carefully. In many places people are not allowed to fish. Luckily the fish and the other animals on the reef are so interesting that most people are happy just to look at them!