The Blackblotched Porcupinefish occurs in tropical waters and is found on coral reefs, rocky reefs and inshore waters.
The Blackblotched Porcupinefish has erectile spines on the head and body. Like all members of the family, it can inflate its body with water, and turn itself into a very spiny ball.
The body is brown to grey above shading to white below. There are white-margined dark blotches on the back and sides, and the fins are normally unspotted.
It is found on coral and rocky reefs and inshore waters.
The species is occurs in tropical waters of the Indo-west and Central Pacific, from South Africa, north to Japan, south to Australia and east to the Marshall and Society Islands.
In Australia it is known from the central coast of Western Australia, around the tropical north and south on the east coast to southern 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.
- 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.
- Leis, J.M. 2006. Nomenclature and distribution of the species of the porcupinefish family Diodontidae (Pisces, Teleostei). Memoirs of Museum Victoria. 63(1): 77-90.
- Randall, J.E., Allen, G.R. & R.C. Steene. 1997. Fishes of the Great Barrier Reef and Coral Sea. Crawford House Press. Pp. 557.