Animal Species:Merten's Butterflyfish, Chaetodon mertensii (Cuvier, 1831)
Merten's Butterflyfish is most easily recognised by its distinctive colouration. It occurs throughout much of the Indo-West Pacific.
Merten's Butterflyfish is most easily recognised by its distinctive colouration. It is white with 6-7 black chevron-shaped markings on the body. The posterior portion of the body and dorsal, anal and caudal fins are yellow-orange. There is a black, silver-edged bar through they eye and a dark mark on the nape.
Merten's Butterflyfish grows to 12.5 cm in length.
It is a marine species that is widely distributed through the Indo-West Pacific. In Australia it is known from the northern Great Barrier Reef 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.
Distribution by collection data
Feeding and Diet
It eats algae and bottom-dwelling invertebrates.
- Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Western Australian Museum. Pp. 292.
- Allen, G.R., Steene, R. & M. Allen. 1998. A Guide to Angelfishes & Butterflyfishes. Odyssey Publishing/Tropical Reef Research. Pp. 250.
- Kuiter, R.H. 1996. Guide to Sea Fishes of Australia. New Holland. Pp. 433.
- Kuiter, R.H. 2000. Coastal Fishes of South-eastern Australia. Gary Allen. Pp. 437.
- 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