Spotfin Porcupinefish, <i>Chilomycterus reticulatus</i> Click to enlarge image
A Spotfin Porcupinefish, Chilomycterus reticulatus, at a depth of 8m, Middle Beach, Lord Howe Island, New South Wales, 18 February 2016. Image: Paul Day
© Paul Day

Fast Facts

  • Classification
    Species
    reticulatus
    Genus
    Chilomycterus
    Family
    Diodontidae
    Order
    Tetraodontiformes
    Class
    Actinopterygii
    Subphylum
    Vertebrata
    Phylum
    Chordata
    Kingdom
    Animalia
  • Size Range
    The Spotfin Porcupinefish grows to 75 cm in length.

Introduction

The Spotfin Porcupinefish has short immovable spines on the head and body. The species has a patchy distribution in tropical and subtropical marine waters worldwide.



Identification

The Spotfin Porcupinefish is grey above and white below. It has dark spots on the body and fins. There are short immovable spines on the head and body.

The species has a dark bar below the eye and another at the rear of the head. There may be a faint bar in the pectoral region and another before the dorsal fin.



Habitat

Young fish up to 20 cm in length are pelagic. Adults live on rocky reefs, coral reefs and soft bottoms in depths down to 100 m.

Distribution

It has a patchy distribution in tropical and subtropical marine waters worldwide.

In Australia it is known from north-western Western Australia and northern Queensland to northern New South Wales. It has also been recorded from Lord Howe Island. The fish in the upper images were well south of their recorded distribution.

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.



Feeding and diet

It feeds on hard-shelled invertebrates.

References

  1. Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Western Australian Museum. Pp. 292.
  2. Leis, J.M. Diodontidae. Porcupinefishes (burrfishes). in Carpenter, K.E. & V.H. Niem (Eds). FAO Species Identification Guide for Fishery Purposes. The Living Marine Resources of the Western Central Pacific. Volume 6. Bony Fishes part 4 (Labridae to Latimeriidae), estuarine crocodiles, sea turtles, sea snakes and marine mammals. FAO, Rome. Pp. iii-v, 3381-4218.
  3. Myers, R.F. 1999. Micronesian Reef Fishes. Coral Graphics. Pp. 330.
  4. Randall, J.E., Allen, G.R. & R.C. Steene. 1997. Fishes of the Great Barrier Reef and Coral Sea. Crawford House Press. Pp. 557.