Fast Facts

  • Classification
    Species
    rectangulus
    Genus
    Rhinecanthus
    Family
    Balistidae
    Order
    Tetraodontiformes
    Class
    Actinopterygii
    Subphylum
    Vertebrata
    Phylum
    Chordata
    Kingdom
    Animalia
  • Size Range
    The species grows to 25 cm in length.

Introduction

The Wedgetail Triggerfish can be recognised by its colouration. It occurs in tropical marine waters of the Indo-West and Central Pacific.

Identification

The Wedgetail Triggerfish can be recognised by its colouration. It has a diagonal black band from the eye to the anal fin. There is a black wedge-shaped mark on the caudal peduncle. This is preceded by two yellow v-shaped marks (white in juveniles). There are black bands between the eyes and a blue bar across the upper lip.

Distribution

It occurs in tropical marine waters of the Indo-West and Central Pacific. In Australia it is known from the central to north-western coasts of Western Australia and the northern Great Barrier Reef, Queensland south to the central coast of New South Wales.

The map below shows the Australian distribution of the species based on public sightings and specimens in Australian Museums. Click on the map for detailed information.  Source: Atlas of Living Australia.

Rhinecanthus rectangulus

Ozcam map of Wedgetail Triggerfish specimens in the Australian Museum. http://ozcam.ala.org.au/occurrences/search?q=Rhinecanthus%20rectangulus&zoom=off#mapView

References

  1. Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Western Australian Museum. Pp. 292.
  2. Hoese, D.F., Bray, D.J., Paxton, J.R. & G.R. Allen. 2006. Fishes. In Beesley, P.L. & A. Wells. (eds) Zoological Catalogue of Australia. Volume 35. ABRS & CSIRO Publishing: Australia. parts 1-3, pages 1-2178.
  3. Kuiter, R.H. 1996. Guide to Sea Fishes of Australia. New Holland. Pp. 433.
  4. Kuiter, R.H. 2000. Coastal Fishes of South-eastern Australia. Gary Allen. Pp. 437.
  5. Randall, J.E., Allen, G.R. & R.C. Steene. 1997. Fishes of the Great Barrier Reef and Coral Sea. Crawford House Press. Pp. 557.