Ladd's Frillgoby, Bathygobius laddi (Fowler 1931)

Other Names: Brownboy Goby

Ladd's Frillgoby, Bathygobius laddi. Source: Barry Hutchins / Western Australian Museum. License: All rights reserved

Males are uniformly dark brown with dusky to black fins. Females are pale brown with 3-4 irregular crossbars along the body, a dark crescentic bar on the caudal-fin base, and mottled dorsal and caudal fins.

Cite this page as:
Bray, D.J. 2022, Bathygobius laddi in Fishes of Australia, accessed 03 Dec 2023,

Ladd's Frillgoby, Bathygobius laddi (Fowler 1931)

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Point Quobba, Western Australia, to Arrawarra, New South Wales. Elsewhere the tropical, Indo-west Pacific (east to Samoa and north to Japan, but absent from Pacific Plate atolls).
Inhabits mangroves, intertidal rock pools, and rubble, silty and sandy areas on rocky reefs.


Dorsal fin VI + I,9; Anal fin I,8; Pectoral fin 21-24; Longitudinal scale series 28-32; Predorsal scales 9-13.
Depth of body 4.6-5.9 in SL; head distinctly depressed, width greater than depth; upper 5-6 pectoral rays partly free from membrane; caudal fin rounded. Body scales ctenoid, becoming cycloid on head and anterior body (short distance anterior to first dorsal fin); predorsal scales not reaching rear margin of preopercle; cheek, opercle, pectoral fin base and prepelvic area naked.


The species is named in honour of Dr. H. L. Ladd, who collected fishes for the Bishop Museum in Hawaii.

Species Citation

Rhinogobius laddi Fowler 1931, Memoirs of the Bernice P. Bishop Museum 11(5): 362, fig. 6. Type locality: Suva, Fiji Islands.


Bray, D.J. 2022


Atlas of Living Australia

Ladd's Frillgoby, Bathygobius laddi (Fowler 1931)


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

Fowler, H.W. 1931. The fishes of Oceania — Supplement 1. Memoirs of the Bernice P. Bishop Museum 11(5): 312-381 figs 1-7 

Hoese, D.F. 1986. Family No. 240: Gobiidae. pp. 774-807 figs in Smith, M.M. & Heemstra, P.C. (eds). Smith's Sea Fishes. Johannesburg : Macmillan South Africa xx + 1047 pp. 144 pls. See ref at BHL

Hutchins, B. 2004. Fishes of the Dampier Archipelago, Western Australia. Records of the Western Australian Museum, Supplement 66: 343–398 

Hutchins, J.B. 1994. A survey of the nearshore reef fish fauna of Western Australia's west and south coasts — The Leeuwin Province. Records of the Western Australian Museum, Supplement 46: 1-66 figs 1-6 

Johnson, J.W. 2010. Fishes of the Moreton Bay Marine Park and adjacent continental shelf waters, Queensland, Australia. pp. 299-353 in Davie, P.J.F. & Phillips, J.A. Proceedings of the Thirteenth International Marine Biological Workshop, The Marine Fauna and Flora of Moreton Bay. Memoirs of the Queensland Museum 54(3) 

Johnson, J.W. & Gill, A.C. 2005. Reef and shore fishes of Sweers Island, Gulf of Carpentaria. Gulf of Carpentaria Scientific Study Report. Geography Monograph Series. Brisbane: Royal Geographic Society of Queensland. pp. 239-260

Larson, H. 2019. Bathygobius laddi. The IUCN Red List of Threatened Species 2019: e.T193155A2201899. Accessed on 23 February 2022.

Larson, H.K. & Williams, R.S. 1997. Darwin Harbour fishes: a survey and annotated checklist. pp. 339-380 in Hanley, H.R., Caswell, G., Megirian, D. & Larson, H.K. (eds). The Marine Flora and Fauna of Darwin Harbour, Northern Territory, Australia. Proceedings of the Sixth International Marine Biology Workshop. Darwin : Museum and Art Gallery of the Northern Territory 466 pp.

Larson, H.K., Williams, R.S. & Hammer, M.P. 2013. An annotated checklist of the fishes of the Northern Territory, Australia. Zootaxa 3696(1): 1-293 

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

Randall, J.E. 2005. Reef and shore fishes of the South Pacific. New Caledonia to Tahiti and the Pitcairn Islands. Honolulu : University of Hawaii Press 707 pp. 

Randall, J.E., Allen, G.R. & Steene, R. 1997. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 557 pp. figs.

Quick Facts

CAAB Code:37428070

Conservation:IUCN Least Concern

Habitat:Reef associated, mangroves

Max Size:5 cm TL

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