Twospine Sandgoby, Hazeus diacanthus (Schultz 1943)

Other Names: Diacanthus Goby, Hole Goby
A translucent greyish goby covered in brown and white spots, and a row of double spots just below the midlateral scale row.
This species has previously been referred to as Oplopomops diacanthus and Opua diacanthus.

Cite this page as:
Bray, D.J. 2019, Hazeus diacanthus in Fishes of Australia, accessed 03 Jul 2020,

Twospine Sandgoby, Hazeus diacanthus (Schultz 1943)

More Info


Montebello Islands, Rowley Shoals and Scott Reef, Western Australia, Ashmore Reef, Timor Sea, and the northern Great Barrier Reef to the Capricorn Group, Queensland. Elsewhere the species occurs in the tropical, Indo-west-central Pacific.

Inhabits pale sandy and fine rubble patches near reefs to a depth of about 10 metres. The species is often partly burried in sand. 


Dorsal fin VI + I, 10; Anal fin I, 9-11.
Pelvic fins, frenum present; caudal fin rounded, about equal to head length (HL); longitudinal scale series 28; ctenoid scales on body and nape; predorsal scales 10; cheek and opercle without scales; depth of body 6.1 in SL.

Species Citation

Oplopomus diacanthus Schultz 1943, Bulletin of the United States National Museum 180: 229, 242, fig. 22. Type locality: Canton Island.


Bray, D.J. 2019


Atlas of Living Australia

Twospine Sandgoby, Hazeus diacanthus (Schultz 1943)


Allen, G.R. 1993. Fishes of Ashmore Reef and Cartier Island. Records of the Western Australian Museum, Supplement 44: 67-91 (as Oplopomops diacanthus)

Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp. 

Kuiter, R.H. & Tonozuka, T. 2001. Pictorial guide to Indonesian reef fishes. Part 3. Jawfishes - Sunfishes, Opistognathidae - Molidae. Zoonetics, Australia. p. 623-893.

Larson, H.K. & Wright, J. 2003. A new genus for the Indo-Pacific goby species Gobius baliurus Valenciennes (Teleostei, Gobiidae, Gobiinae). The Beagle, Records of the Museums and Art Galleries of the Northern Territory 19: 127-135 

Lowe, G.R. & Russell, B.C. 1990. Additions and revisions to the checklist of fishes of the Capricorn-Bunker Group, Great Barrier Reef, Australia. Great Barrier Reef Marine Park Authority. Special Publication Series 19: 1-27 (as Oplopomops diacanthus)

Myers, R.F. 1999. Micronesian Reef Fishes. A comprehensive guide to the coral reef fishes of Micronesia. Guam : Coral Graphics vi 330 pp. 192 pls. (as Oplopomops diacanthus)

Schultz, L.P. 1943. Fishes of the Phoenix and Samoan Islands collected in 1939 during the expedition of the U.S.S. Bushnell. Bulletin of the United States National Museum 180: 1-316 figs 1-27 pls 1-9 See ref at BHL

Smith, J.L.B. 1959. Gobioid fishes of the families Gobiidae, Periophthalmidae, Trypauchenidae, Taenioididae and Kraemeriidae of the western Indian Ocean. Ichthyological Bulletin of the J.L.B. Smith Institute, Grahamstown 13: 185-225 figs 1-42 pls 9-13 (as Oplopomops diacanthus)

Quick Facts

CAAB Code:37428202

Depth:3-20 m

Habitat:Reef associated

Max Size:7.5 cm SL

Species Maps

CAAB distribution map