Teleostei (teleosts) > 
Acanthuriformes (Surgeonfishes) > 
Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae						
							
							Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).
						
					Issue   
Sister species: Acanthurus tractus (Ref. 087362).
			
			
				
					Environment: milieu / climate zone / depth range / distribution range					
						Ecology					
				
				
				
					Marine;  reef-associated; depth range 2 - 80 m (Ref. 7345). Tropical; 0°S -   30°S, 50°W -   5°W (Ref. 87362)				
				 
			
			
			
				
				
				
					South and Central Atlantic:  coast of Brazil, from Parcel Manuel Luiz to Santa Catarina, including the oceanic Islands of Fernando de Noronha, Atol das Rocas, Trindade, Ascension I. and St. Helena I. (Ref. 87362).
				
				 
			
			
				
					Size / Weight / Age
				
				
				
					Maturity: Lm ?  range ? - ? cm
 Max length : 12.8 cm TL male/unsexed; (Ref. 91126)				
				 
			
			
			
			
			
			
			
			
				A diurnal species. Maximum depth from Ref. 126840.			
			 
			
			
			
				
					Life cycle and mating behavior					
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
				
				
				
								
				
			
			 
				
				
				
					Bernal, M.A. and L.A. Rocha, 2011. Acanthurus tractus Poey, 1860, a valid western Atlantic species of surgeonfish (Teleostei, Acanthuridae), distinct from Acanthurus bahianus Castelnau, 1855. Zootaxa 2905:63-68. (Ref. 87362)
				
				 
			
			
			
							
					
						IUCN Red List Status   (Ref. 130435: Version 2025-1)
					
					
				 
					
			
			
			
			
			
			
			
				
					Threat to humans  
				
				
				
					  Harmless				
				
			 
			
			
			
			
				
					Human uses  				
				
				
					Fisheries: commercial				
				
				
			
			
						
			
			
			
				
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					Estimates based on models				
				
				
				
				
				
					
					Phylogenetic diversity index  (Ref. 
82804):  PD
50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].					
													Bayesian length-weight: a=0.01950 (0.01145 - 0.03321), b=2.91 (2.77 - 3.05), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 
93245).
					
					Trophic level  (Ref. 
69278):  2.4   ±0.1 se; based on size and trophs of closest relatives					
						 Generation time: 0.8 ( na - na) years. Estimated as median ln(3)/K based on 1
 growth studies.					
						Resilience  (Ref. 
120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).					
											
				
									
					Fishing Vulnerability  (Ref. 
59153):  Low vulnerability (10 of 100). 
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						Nutrients  (Ref. 
124155):  Calcium = 419 [167, 1,788] mg/100g; Iron = 1.56 [0.51, 4.22] mg/100g; Protein = 17.3 [15.8, 18.8] %; Omega3 = 0.176 [0.065, 0.472] g/100g; Selenium = 7.92 [2.10, 38.26] μg/100g; VitaminA = 271 [52, 1,310] μg/100g; Zinc = 8.15 [2.49, 17.42] mg/100g (wet weight);