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Blue Face Tang

03525

Tangs
Blue Face Tang
Acanthurus bahianus
  • Description
  • Care Sheets
Care: 
Intermediate
Diet: 
Algivorous
Light: 
Medium
Place of origin: 
Caribbean
Known from Ascension, St. Helena and tropical western Atlantic with stragglers north to Massachusetts and south to Rio de Janeiro. Mainly found on hard substrates grazing on algae. Shallow reefs to about 25m depth. Grey-yellow to brown with thin longitudinal lines on the dorsal fin and along the sides of the body, latter especially noticeable in young. Length to 36cm, commonly to 25cm. 
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 spine  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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