Overview

Comprehensive Description

Biology

Found off steep outer-reef escarpments. May be solitary but most commonly seen in small aggregations feeding on zooplankton well off the bottom.
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Distribution

Western Pacific: Great Barrier Reef and Coral Sea to Tonga.
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Southwestern Pacific.
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Physical Description

Morphology

Dorsal spines (total): 8 - 9; Dorsal soft rays (total): 22 - 33; Analspines: 2 - 3; Analsoft rays: 18 - 31; Vertebrae: 22
  • Randall, J.E. 2001 Acanthuridae. Surgeonfishes (tangs, unicornfishes). p. 3653-3683. In K.E. Carpenter and V. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 6. Bony fishes part 4 (Labridae to Latimeriidae), estuarine crocodiles. FAO, Rome. (Ref. 9808)   http://www.fishbase.org/references/FBRefSummary.php?id=9808&speccode=12625 External link.
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Size

Maximum size: 330 mm TL
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Max. size

33.0 cm TL (male/unsexed; (Ref. 2334))
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Diagnostic Description

Body varying from light bluish grey to dark brown, without blue lines. Outer part of pectoral fins abruptly white, the demarcation curved such that pale area is broadest on central part of fin. Least depth of caudal peduncle 3.1 to 3.3 times in head length. Maximum standard length about 33 cm (Ref 9808).
  • Randall, J.E. 2001 Acanthuridae. Surgeonfishes (tangs, unicornfishes). p. 3653-3683. In K.E. Carpenter and V. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 6. Bony fishes part 4 (Labridae to Latimeriidae), estuarine crocodiles. FAO, Rome. (Ref. 9808)   http://www.fishbase.org/references/FBRefSummary.php?id=9808&speccode=12625 External link.
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Ecology

Habitat

Environment

reef-associated; marine; depth range 5 - 20 m (Ref. 9710)
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Depth range based on 6 specimens in 1 taxon.
Water temperature and chemistry ranges based on 5 samples.

Environmental ranges
  Depth range (m): 7.5 - 20
  Temperature range (°C): 25.709 - 28.465
  Nitrate (umol/L): 0.151 - 0.923
  Salinity (PPS): 34.452 - 35.312
  Oxygen (ml/l): 4.543 - 4.727
  Phosphate (umol/l): 0.122 - 0.168
  Silicate (umol/l): 0.983 - 3.167

Graphical representation

Depth range (m): 7.5 - 20

Temperature range (°C): 25.709 - 28.465

Nitrate (umol/L): 0.151 - 0.923

Salinity (PPS): 34.452 - 35.312

Oxygen (ml/l): 4.543 - 4.727

Phosphate (umol/l): 0.122 - 0.168

Silicate (umol/l): 0.983 - 3.167
 
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Depth: 5 - 20m.
From 5 to 20 meters.

Habitat: reef-associated. Found off steep outer-reef escarpments. May be solitary but most commonly seen in small aggregations feeding on zooplankton well off the bottom.
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Conservation

Threats

Least Concern (LC)
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Wikipedia

Acanthurus albipectoralis

Acanthurus albipectoralis (with paper to show white fin)

The Whitefin surgeonfish (Acanthurus albipectoralis) is a marine reef tang in the fish family Acanthuridae. Individuals grow to a maximum length of 33 cm (13 in).

References

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