Orange-red Pygmygoby, Trimma okinawae (Aoyagi 1949)

Other Names: Okinawa Rubble Goby, Orange Spot Goby, Orange-red Goby, Orange-red Pygmy Goby, Orange-spotted Goby, Red-spotted Dwarfgoby, Yellow-speckled Cave-goby

An Orange-red Pygmygoby, Trimma okinawae, at Iriomote Island, Okinawa, Japan - depth 10 m. Source: orangkucing / License: CC BY Attribution-ShareAlike

A greyish pygmygoby with a matrix of with dense orange spotting on the head and body, faint spotting on the fins and an elongate second dorsal-fin spine. 

Cite this page as:
Bray, D.J. 2018, Trimma okinawae in Fishes of Australia, accessed 17 Jul 2024,

Orange-red Pygmygoby, Trimma okinawae (Aoyagi 1949)

More Info


Shark Bay and offshore reefs of Western Australia, to Cartier Reef, Timor Sea, and the northern Great Barrier Reef and reefs in the Coral Sea, to the Capricorn Group, southern Queensland. Elsewhere the species occurs in the east-Indo-west-central Pacific.
Inhabits clear coastal reefs, often hovering upside-down in small caves.


The Orange-red Pygmygoby usually lives in social groups comprising a large male and one or more smaller females.


Trimma okinawae appears to be a complex of several closely related species, and further genetic research may reveal additional species.


Bray, D.J. 2018


Australian Faunal Directory

Orange-red Pygmygoby, Trimma okinawae (Aoyagi 1949)


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

Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Perth : Western Australian Museum 292 pp. 106 pls.

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

Allen, G.R. & Swainston, R. 1988. The Marine Fishes of North-Western Australia. A field guide for anglers and divers. Perth, WA : Western Australian Museum vi 201 pp., 70 pls. 

Kuiter, R.H. 1992. Tropical Reef-Fishes of the Western Pacific, Indonesia and Adjacent Waters. Jakarta : PT Gramedia Pustaka Utama 314 pp. pls.

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

Manabe, H., Ishimura, M., Shinomiya, A. & Sunobe, T. 2007. Field evidence for bi-directional sex change in the polygynous gobiid fish Trimma okinawaeJournal of Fish Biology 70: 600–609. doi:10.1111/j.1095-8649.2007.01338.x

Moore, G.I., Morrison, S.M., Hutchins, B.J., Allen, G.R. & Sampey, A. 2014. Kimberley marine biota. Historical data: fishes. Records of the Western Australian Museum, Supplement 84: 161-206

Munday, P.L., Caley, M.J. & Jones, G.P.  1998. Bi-directional sex change in a coral-dwelling goby. Behavioral Ecology and Sociobiology 43(6): 371-377.

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.

Randall, J.E. 2005. Reef and shore fishes of the South Pacific. New Caledonia to Tahiti and the Pitcairn Islands. University of Hawaii Press, Honolulu, Hawaii. 720 pp.

Randall, J.E., Allen, G.R. & Steene, R. 1990. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 507 pp. figs

Winterbottom, R. & Hoese, D.F. 2015. A revision of the Australian species of Trimma (Actinopterygii, Gobiidae), with descriptions of six new species and redescriptions of twenty-three valid species. Zootaxa 3934: 1-102

Quick Facts

CAAB Code:37428270


Conservation:IUCN Least Concern

Depth:8-35 m

Habitat:Reef associated

Max Size:3.5 cm SL

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CAAB distribution map