Yellow and Black Dwarfgoby, Trimma flavatrum Hagiwara & Winterbottom 2007

Other Names: Hime-aogi-haze, Wasp Pygmy Goby, Wasp Pygmygoby
A yellowish to "dirty" yellowish-orange goby becoming darker towards the caudal peduncle which is blackish or dark brown, reddish-orange to yellow dorsal and anal fins with a dark basal stripe, and an almost translucent to yellow caudal fin with a pale margin.

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

Yellow and Black Dwarfgoby, Trimma flavatrum Hagiwara & Winterbottom 2007

More Info


Rowley Shoals, Western Australia, Cartier Reef, Timor Sea, and the northern outer Great Barrier Reef, Queensland; not recorded from mid- or inshore reefs on the Great Barrier Reef. Elsewhere the species occurs in the West Pacific, from Australia, eastward to Samoa, and north through Palau & Caroline Islands to the Ryukyu Islands.
Inhabits caves, recesses and overhangs, often hovering upside-down.


Dorsal fin VI + I,7-8; Anal fin I, 7-8.
Scales present in the predorsal midline and on the cheek and opercle; no elongate dorsal spines; a broad and somewhat concave interorbital region with a bony interorbital equal to about half or more of the width of the pupil with no raised, longitudinal, fleshy ridge in the midline; no postorbital trench; fifth pelvic fin ray usually unbranched (may be branched once sequentially); longitudinal scale series 22-26; predorsal scales 7-8; depth of body about 4.4-4.6 in SL.


Yellow to dirty yellow-orange with scattered melanophores intensifying to a blackish or dark brown caudal peduncle, with median fins reddish-orange to yellow with a dark basal stripe, except for the caudal fin, which varies from almost translucent to yellow with whitish margins.


The specific name flavatrum is from the Latin 'flavus' meaning yellow and 'atrum' for black, in reference to the unusual yellow and black coloration of this species.

Species Citation

Trimma flavatrum Hagiwara & Winterbottom 2007, Bull. Natl Mus. Nat. Sci. (A) Suppl. 1: 164, figs 1-6. Type locality: Nishikomi Cave, Amami-oshima Island, Nnsei Islands, Japan, 28°13'4"N,129°10'5"E. 


Bray, D.J. 2018


Australian Faunal Directory

Yellow and Black Dwarfgoby, Trimma flavatrum Hagiwara & Winterbottom 2007


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

Hagiwara, K. & Winterbottom, R. 2007. Two new species of Trimma (Gobiidae) from the western Pacific. Bulletin of the National Museum of Nature and Science (A) Suppl. 1: 163-174

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

Senou, H., Suzuki, T., Shibukawa, K. & Yano, K. 2004. A photographic guide to the gobioid fishes of Japan. Heibonsha, Ltd., Tokyo. 534 pp. (p, 114, as Trimma sp. 10)

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:37428396

Conservation:IUCN Least Concern

Depth:7-46 m

Habitat:Reef associated

Max Size:2.3 cm SL

Species Maps

CAAB distribution map