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The Bicolour Parrotfish (Cetoscarus bicolor) is a tropical fish species that belongs to the group of fish known as ‘Parrotfishes’ in the family Scaridae. Parrotfishes are named for their bright colours and the fusion of their teeth to form beak-like plates in the jaws. It can be found occurring in the warm waters of the Indo-Pacific region and is known to occur from the Red Sea to the Tuamoto Islands, north to the Izu Island and down south to the southern Great Barrier Reef off Queensland in Australia. This species goes through several colour changes during its life cycle and the large females change sex to become brightly coloured males. In its initial phase it is reddish-brown in colour with yellow on the back. Juveniles are white with a broad orange bar covering the head except for the snout and chin. It can be found occurring on coral reefs and lagoons and the adults form harems whilst the juveniles are solitary. It is known to graze on algae for food. The Bicolour Parrotfish (Cetoscarus bicolor) grows to a maximum length of approximately 90cm.
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