Greybeard Dwarfgoby, Trimma annosum Winterbottom 2003

Other Names: Greybeard Pygmygoby, Greybearded Pygmy Goby, Greybearded Pygmygoby

A Greybeard Dwarfgoby, Trimma annosum, in the Maldives. Source: Andrey Ryanskiy / FishBase. License: CC by Attribution-NonCommercial

A bluish-grey dwarfgoby with a greyish cheek, 3-4 rows of large orange blotches on the head and body, with the uppermost row forming saddles along the back.

Cite this page as:
Bray, D.J. 2020, Trimma annosum in Fishes of Australia, accessed 17 Jul 2024,

Greybeard Dwarfgoby, Trimma annosum Winterbottom 2003

More Info


Ashmore Reef in the Timor Sea, and the northern Great Barrier Reef, and reefs in the Coral Sea to One Tree Island, Queensland; also Christmas Island in the eastern Indian Ocean. Elsewhere the species occurs in the tropical, east Indo-west-central Pacific.
This solitary species shelters on caves and crevices.


The specific name is from the Latin annosum (= full of years, long lived, aged), in allusion to the plain grey cheek of the new species, which is perhaps reminiscent of that class of elderly hirsute human males sometimes referred to as ‘greybeards’.

Species Citation

Trimma annosum Winterbottom 2003, Zootaxa 218: 2, figs 1-2. Type locality: Cagilai Island, off Ovalau Islands, Viti Levu, Bau Waters, Fiji. 


Bray, D.J. 2020


Atlas of Living Australia

Greybeard Dwarfgoby, Trimma annosum Winterbottom 2003


Allen, G.R. 1993. Fishes of Ashmore Reef and Cartier Island. Records of the Western Australian Museum, Supplement 44: 67-91 (as Trimma sp. 9)

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

Greenfield, D. 2016. Trimma annosum. The IUCN Red List of Threatened Species 2016: e.T193196A2207443. Downloaded on 16 May 2018.

Winterbottom, R. 2003. A new species of the gobiid fish Trimma from the western pacific and northern Indian Ocean coral reefs, with a description of its osteology. Zootaxa 218: 1-24 

Winterbottom, R. 2019. An illustrated key to the described valid species of Trimma (Teleostei: Gobiidae). Journal of the Ocean Science Foundation 34: 1-61

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:37428398

Conservation:IUCN Least Concern

Depth:5-60 m

Fishing:Aquarium fish

Habitat:Reef associated

Max Size:3 cm TL

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Species Maps

CAAB distribution map