Orangeblotch Surgeonfish (species: Acanthurus olivaceus) in Lizard Island Field Guide (Lizard Island Field Guide)
Acanthurus olivaceus
Orangeblotch Surgeonfish

©Anne Hoggett: Adult Orangeblotch Surgeonfish at MacGillivray Reef near Lizard Island

©Andy Lewis: Acanthurus olivaceus at LIzard Island.

©Anne Hoggett: Subadult¬†Acanthurus olivaceus at Lizard Island
Kingdom Animalia
Phylum Chordata
Class Actinopterygii
Order Perciformes
Family Acanthuridae
Genus Acanthurus
Species Acanthurus olivaceus



Distinguishing features

Juveniles completely yellow. With age, they develop an orange band behind the upper gill cover which then develops a dark blue order. Adults are grey, abruptly darker at the rear, and the tail has a white band on the trailing edge.


  • Size data has not been obtained.

Depth range

  • Depth range data is not yet available.



©Atlas of Living Australia: Australian distribution

Web resources


References that assist with identification

  • Allen, G., R. Steene, P. Humann and N. Deloach (2003). Reef fish identification: Tropical Pacific New World Publications Inc., Jacksonville, FL, USA.

Other references

  • Bellwood, D.R. (1988). Ontogenetic changes in the diet of early post-settlement Scarus species (Pisces: Scaridae), Journal of Fish Biology, 33: 213-219. LIRS catalog number 396.
  • Bellwood, D.R. and C.J. Fulton (2008). Sediment-mediated suppression of herbivory on coral reefs: decreasing resilience to rising sea levels and climate change? Limnology and Oceanography, 53: 2695-2701. LIRS catalog number 1259.
  • View all references