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Species: Acanthurus guttatus, Mustard tang, Spotted surgeonfish, Whitespotted surgeonfish

All Families:   All Genera:   All Species:

grey + 2 white bars + dense white dots
C black & white

Acanthurus guttatus Forster, 1801

Whitespotted surgeonfish, Spotted surgeonfish, Mustard tang

Body a deep oval; head profile steep; eye high on the head; mouth small, protrusible, low on head; teeth on jaws fixed, with flattened, notched tips, 12 upper teeth, 14 lower teeth; gill rakers 21-24; dorsal rays IX, 27-30; anal rays III, 23-26; pectoral rays 15-17; pelvic fin I, 5; a single, small depressible spine fits into a groove on the side of the base of the tail; tail fin concave; scales very small, rough; lateral line complete.

Head, body and dorsal and anal fins dark grey brown; a white bar on head behind eye and another on body just behind pectoral base; dorsal, anal and body behind second bar with many small white spots; pelvic fins bright yellow; tail fin pale yellow with a broad black rear edge.

Reaches 26 cm

Habitat: Restricted to shallow surgy areas of seaward reef environments.

Depth range:1-6 m

Widely distributed throughout the tropical Indo-central Pacific; introduced to Florida.


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom only
  • Bottom
Habitat
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef only
FishBase Habitat
  • Reef Associated
Feeding Group
  • Herbivore
  • Data
Diet
  • Benthic microalgae
  • Data
Egg Type
  • Data
  • Pelagic larva
  • Pelagic
Global Endemism
  • Exotic (Introduced)
Regional Endemism
  • Exotic (Introduced)
Residency
  • Vagrant
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Least concern
  • Listed
CITES
  • Not listed
Length Max
  • 26
Depth Range Min
  • 1
Depth Range Max
  • 6