Porites Goby, Bryaninops ridens Smith 1959

Other Names: Ridens Goby

Bryaninops ridens, in Brayka Bay, Marsa Alam, Egypt. Source: S.V. Bogorodskyvia, Fig. 13, in Suzuki et al. (2012) Zootaxa 3170:13-14 via http://tb.plazi.org/. License: CC BY Attribution

A translucent greenish-yellow goby with black dots on the head and belly, a yellowish-green band with black dots from the eye across the front of the snout enclosing the nostrils, and a dusky yellowish-green iris with a broad inner white circle. 

Cite this page as:
Bray, D.J. 2020, Bryaninops ridens in Fishes of Australia, accessed 08 Dec 2023, https://fishesofaustralia.net.au/home/species/1319

Porites Goby, Bryaninops ridens Smith 1959

More Info


Hibernia Reef, Western Australia, and the northern Great Barrier Reef, Queensland; also Cocos (Keeling) Islands in the eastern Indian Ocean. Elsewhere the species is widespread but relatively rare in the tropical, Indo-west Pacific: Red Sea and the East African coast to the Maldives and Thailand, Fiji, Tonga, French Polynesia (the Marquesas) north to Japan (the Yaeyama Islands), Federated States of Micronesia and Marshall Islands, southward to Australia and New Caledonia.
Inhabits lagoon and seaward reefs, living in association with large Porites colonies and branching Millepora fire corals.


Dorsal fin VI + I,7-8; Anal fin I,7-8; Pectoral fin 13-14;  Caudal fin 11 (branched), 15-17 (segmented); Longitudinal scale count 31-37.
Body naked before rear base of first dorsal fin, the ; body depth at origin of anal fin 13.3–17.5% SL; body progressively compressed posteriorly; head width greater than head depth and broader ventrally; snout length shorter than orbit diameter; gill opening extending forward to or anterior to posterior margin of preopercle; no canine tooth at side of lower jaw; caudal fin truncate to slightly rounded; pelvic fins short, round, and cup-like, the pelvic spines short.


Attains a maximum reported length opf 1.8 cm SL.


Body translucent greenish yellow, the skeletal features of body visible; head and abdomen yellowish green with numerous black dots; a yellowish green band with black dots from eye to eye across front of snout and enclosing nostrils; red of gill filaments visible through operculum; fins translucent; iris dusky yellowish green with a broad inner white circle. 


Not known to be traded in the aquarium industry.


IUCN Red List: Least Concern


The specific name ridens (= laughing or smiling), perhaps in reference to the large mouth as the illustration accompanying Smith's description appears to show this goby “smiling” (Scharpf & Lazara 2019).

Species Citation

Bryaninops ridens Smith 1959, Ichthyological Bulletin, Department of Ichthyology, Rhodes University, Grahamstown 13: 216, fig. 34, pl. 12H. Type locality: Baixo Pinda, Mozambique. 


Bray, D.J. 2020


Atlas of Living Australia

Porites Goby, Bryaninops ridens Smith 1959


Allen, G.R. & Smith-Vaniz, W.F. 1994. Fishes of Cocos (Keeling) Islands. Atoll Research Bulletin 412: 1-21 

Herler, J. 2007. Microhabitats and ecomorphology of coral- and coral rock-asociated gobiid fish (teleostei: Gobiidae) in the northern Red Sea. Marine Ecology 28(1): 82-94, https://doi.org/10.1111/j.1439-0485.2007.00165.x

Hobbs, J-P.A., Newman, S.J., Mitsopoulos, G.E.A., Travers, M.J., Skepper, C.L., Gilligan, J.J., Allen, G.R., Choat, H.J. & Ayling, A.M. 2014. Fishes of the Cocos (Keeling) Islands: new records, community composition and biogeographic significance. Raffles Bulletin of Zoology Supplement 30: 203–219 

Larson, H.K. 1985. A revision of the gobiid genus Bryaninops (Pisces), with a description of six new species. The Beagle. Occasional Papers of the Northern Territory Museum of Arts and Sciences 2(1): 57-93 figs 1-17 

Larson, H.K. 1987. A new species of Bryaninops (Pisces: Gobiidae) with notes on new records of three species of the genus. The Beagle, Records of the Northern Territory Museum of Arts and Sciences 4(1): 139-145.

Larson, H. 2016. Bryaninops ridens. The IUCN Red List of Threatened Species 2016: e.T193091A2193934. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T193091A2193934.en. Downloaded on 20 April 2020.

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. 

Scharpf, C. & Lazara, K.J. 2019. Order GOBIIFORMES: Family GOBIIDAE (a-c) in Fish Name Etymology Database, https://www.etyfish.org/gobiiformes4/, Accessed 20 April 2020.

Smith, J.L.B. 1959. Gobioid fishes of the families Gobiidae, Periophthalmidae, Trypauchenidae, Taenioididae and Kraemeriidae of the western Indian Ocean. Ichthyological Bulletin, Department of Ichthyology, Rhodes University, Grahamstown 13: 185-225 figs 1-42 pls 9-13 See ref online

Suzuki, T., Bogorodsky, S.Y. & Randall, J.E. 2012. Gobiid fishes of the genus Bryaninops from the Red Sea, with description of two new species and two new records. Zootaxa 3170: 1-17.

Quick Facts

CAAB Code:37428081

Behaviour:Lives on Porites & Millepora

Conservation:IUCN Least Concern

Depth:6-30 m

Habitat:Reef associated

Max Size:2 cm SL

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Species Maps

CAAB distribution map