Threadfin Mangrovegoby, Mugilogobius filifer Larson 2001

Other Names: Threadfin Mangrove Goby

A male Threadfin Mangrovegoby, Mugilogobius filifer, from the Northern Territory. Source: Dave Wilson / Aquagreen. License: All rights reserved

A pale brown to greyish goby with 7-9 short oblique dark blotches, bars or chevrons along the side, the bars usually broken up into off-set pairs of blotches. The species also has a dark oblique shoulder bar, a radiating or reticulate pattern of brown lines on the head, and a broad brown band crossing the branchiostegal membranes beneath the head.

Cite this page as:
Bray, D.J. 2019, Mugilogobius filifer in Fishes of Australia, accessed 19 Apr 2024,

Threadfin Mangrovegoby, Mugilogobius filifer Larson 2001

More Info


Cossack, Western Australia, to Cape York and Mabuiag Island, Torres Strait. Elsewhere the species is known from Bougainville, Papua New Guinea.
Inhabits mangrove-lined creeks and estuaries, sometimes entering the lower freshwater parts of streams.


Dorsal fin VI + I,7; Anal fin I,7; Pectoral fin 15-17;  Vertebrae 26: Longitudinal scales 29-40; TRB 9-13; Predorsal scales 13-21; Circumpeduncular scales 11-15.
Predorsal scales small, reaching close up behind eyes, anterior-most scale somewhat larger than rest; scales on body mostly ctenoid; first spine of dorsal fin of adult males usually longest, filamentous (usually white and conspicuous). Caudal fin rounded.


The specific name filifer is from the Latin  filum (= thread or filament), and -fer, suffix (= to bear or carry), in reference to the elongate first dorsal fin of adult males.

Species Citation

Mugilogobus filifer Larson 2001, Records of the Western Australian Museum, Supplement 62: 119, figs 22b, 83, 112-115. Type locality: mangroves, Darwin Harbour, Northern Territory.


Bray, D.J. 2019


Atlas of Living Australia

Threadfin Mangrovegoby, Mugilogobius filifer Larson 2001


Hitchcock, G., Finn, M.A., Burrows, D.W., & Johnson, J.W. 2012. Fishes from fresh and brackish waters of islands in Torres Strait, far north Queensland. Memoirs of the Queensland Museum 56(1): 14-24 See ref at BHL

Larson, H.K. 2001. A revision of the gobiid fish genus Mugilogobius (Teleostei: Gobioidei), and its systematic placement. Records of the Western Australian Museum, Supplement 62: 1-233 DOI 10.18195/issn.0313-122x.62.2001.001-233 Open access

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, B.J., Allen, G.R. & Sampey, A. 2014. Kimberley marine biota. Historical data: fishes. Records of the Western Australian Museum, Supplement 84: 161-206 DOI 10.18195/issn.0313-122x.84.2014.161-206 open access

Quick Facts

CAAB Code:37428350

Depth:0-10 m

Habitat:Estuaries, mangroves, freshwater

Max Size:4 cm SL

Species Image Gallery

Species Maps

CAAB distribution map