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The yellowhead wrasse, ''Halichoeres garnoti'', is a fish species belonging to wrasse family native to shallow tropical waters in the Caribbean Sea and western Atlantic Ocean. ==Description== The yellowhead wrasse is a small sized fish that can reach a maximum length of 19 cm.〔Lieske & Myers,''Coral reef fishes'',Princeton University Press, 2009, ISBN 9780691089959〕 Both its sex and appearance change during its life and the colouring at each stage is rather variable. The body is thin, relatively lengthened and its mouth is terminal. As a juvenile, it is mainly yellow with a lateral, bright-blue stripe. In its initial phase, while it is female, it has a dark-colored back, sometimes with bluish shadings, and a yellow underside. Two short wavy dark lines radiate from the hind edge of each eye with dark spots on its front head. Later, as an adult male, the head and front part of the body are yellow, the hind half of the body is silvery grey and a vertical black blue bar and a broad black blue stripe occur along the border of the dorsal fin. From this dark blue line, three longitudinal lines of gradient colors are visible, they are successively green, blue (this latter continues throughout the ventral part of the fish) then pink to mauve color. It still has the characteristic dark, wavy lines near the eye with the black spots. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yellowhead wrasse」の詳細全文を読む スポンサード リンク
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