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Round Face Tang


Round Face Tang
Acanthurus mata
Place of origin: 
Indian Ocean
Widespread Indo-Pacific. Occurs on coastal to outer reef crest and slope. Adults often seen in schools, feeding mid-water on plankton. Identified by the pale grey or blue body and yellow 'mask'. Juveniles with a distinctive horizontal-lined pattern of alternating pale-blue and dusky lines. Peduncular spine black in adults. Length to 45cm.
The common name "surgeonfish" is derived from a characteristic that clearly distinguishes Acanthuridae from other fish families: the spines or "scalpels" on the caudal peduncle, one or more on each side. Based primarily on differences in this characteristic, the family can be divided into three subfamilies: The Acanthurinae, in which the peduncular spineĀ  rests in a groove and can be erected in defence during the fights, the Nasinae and Prionurinae in which the peduncular feature is arranged as one or more fixed blades on each side, that are sharp and elongate with age.

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