About Ctenochaetus cyanocheilus Randall & Clements, 2001
This species, Ctenochaetus cyanocheilus, has a dorsal fin supported by 8 spines and between 25 and 28 soft rays, while its anal fin is supported by 3 spines and between 22 and 26 soft rays. Its overall body color ranges from orange to brown, with a bluish patch on the breast, and thin blue-grey horizontal lines running along the body. The head and anterior part of the body are covered in numerous small yellow spots. It has a thin yellow ring around its eyes, and its snout ends in blue-tipped lips. The dorsal and anal fins are brown; the dorsal fin bears blue lines that extend from the body. The caudal fin is emarginate. Juvenile individuals of this species are yellow. The maximum published standard length for this species is 16 cm (6.3 in). Ctenochaetus cyanocheilus, also called the yelloweye bristletooth, is distributed in the Western Pacific Ocean, ranging from Sumatra and Peninsular Malaysia east to American Samoa and the Line Islands, north to Japan's Ogasawara Islands, and south to New Caledonia, Tonga, and the Great Barrier Reef. It occurs as solitary individuals at depths between 1 and 60 m, inhabiting areas of dense coral growth on both inner and outer reefs, where it grazes on algae.
