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Novaculichthys taeniourus
''Novaculichthys taeniourus'' (rockmover, dragon, or reindeer wrasse) is a species of wrasse mainly found in coral reefs and lagoons in the Indo-Pacific region. These include habitats in the Gulf of California to Panama; tropical Pacific Ocean islands including Hawaii; the Philippines, Indonesia and Australia; and the Indian Ocean to the east coast of Africa. The common name, "rockmover wrasse", comes from their behavior of upending small stones and reef fragments in search of prey.〔 This species is the only known member of its genus.
==Description==
The rockmover wrasse is a colorful fish, in length. It has an oblong, laterally compressed body and a wedge-shaped head. Its head is scaleless except for two scales on the upper part of the gill coverings and an almost vertical row of small scales behind each eye.
Juveniles and adults have markedly different appearances. In juveniles, the first two dorsal fin spines are long and extended, drooping over the fish's forehead to form a "cowlick". As the fish matures, the elongated rays are lost. The adult fish has a dark greenish-brown body with an elongated white spot on each scale. Its head is gray-blue with brown lines radiated from the eyes. Two black spots occur in front of the dorsal fin and a wide vertical white bar is found on the base of the caudal fin. The posterior part of the caudal fin and the pelvic fins are black. Juveniles found in Hawaii are usually green and those in the western Pacific are burgundy to brownish. Both are spotted in white.
The difference in appearance between juvenile and adult ''N. taeniourus'' is so striking, the common name "rockmover wrasse" is used for adults and "dragon wrasse" is used for juveniles.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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