Animal Species:Redtooth Triggerfish, Odonus niger (Rüppell, 1837)
The Redtooth Triggerfish is coloured blue to purplish with a light blue head. It is found on coral reefs of the Indo-Pacific.
Black-bodied Triggerfish, Blue Triggerfish, Red Toothed Triggerfish
The Redtooth Triggerfish is blue to purplish with a light blue head. All median fins have light blue posterior margins. The anterior portions of the second dorsal and anal fins are elevated. The caudal fin is lunate, with long lobes in adults. There are rows of small spines on the posterior sides of the body. The upturned mouth has two long red teeth in the upper jaw. These are visible when the mouth is closed.
The species grows to 40 cm in length.
The Redtooth Triggerfish occurs on coral reefs of the Indo-Pacific. In Australia it is known from the offshore reefs of north-western Western Australia and from the entire length of the Great Barrier Reef.
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.
Distribution by collection data
Sometimes this fish is seen in large numbers swimming well off the bottom on steep outer reef slopes.
Feeding and Diet
It eats mainly zooplankton.
- Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Western Australian Museum. Pp. 292.
- 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.
- Kuiter, R.H. 1996. Guide to Sea Fishes of Australia. New Holland. Pp. 433.
- Randall, J.E., Allen, G.R. & R.C. Steene. 1997. Fishes of the Great Barrier Reef and Coral Sea. Crawford House Press. Pp. 557.
Mark McGrouther , Collection Manager, Ichthyology