BLUEHEAD

Thalassoma bifasciatum


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IUCN Red List Status: NOT EVALUATED

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Thalassoma bifasciatum (Bloch, 1791)

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Description

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FishBase external link
 
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Morphology: Dorsal spines (total): 8 - 8; Dorsal soft rays (total): 12 - 13; Anal spines: 3 - 3; Anal soft rays: 10 - 11. Body elongate; 3 primary color phases, the smallest with a black mid-lateral stripe which continues as pale red blotches on head; back above stripe yellow on reef fish and whitish on fish from inshore non-reef areas, and body below white. The largest phase, has a bright blue head and a green body with two broad vertical black bars anteriorly which are separated by a light blue interspace; this phase is always male. The small yellow phase with the black stripe may be either male or female (Ref. 13442).

Max size: 25 cm TL (male/unsexed; Ref. 26340)