Singlespot Eviota, Eviota monostigma Fourmanoir 1971

A Singlespot Eviota, Eviota monostigma, from New Caledonia, ROM 64306. Source: Rick Winterbottom / Encyclopedia of Life. License: CC by Attribution-NonCommercial-ShareAlike

A dwarfgoby with a large dark semicircular or crescent-shaped mark over the full depth of the pectoral-fin base and extending onto the finrays, seven small dark spots along the ventral midline from anal-fin origin posteriorly to the end of the caudal peduncle (including three along the anal-fin base), and 4-5 obscure subcutaneous bars along the body. Males may have an elongate first dorsal-fin spine.

Cite this page as:
Bray, D.J. 2020, Eviota monostigma in Fishes of Australia, accessed 02 Dec 2022,

Singlespot Eviota, Eviota monostigma Fourmanoir 1971

More Info


Far northern Great Barrier Reef and reefs in the Coral Sea, to at least One Tree Island, Queensland. Elsewhere the species occurs in the tropical, south-west Pacific: New Caledonia (including Chesterfield Islands), Tonga, and Australia (Great Barrier Reef).
Inhabits fringing reefs, reef slopes, lagoons, and outer reef slopes at depths to 21 m.


Dorsal fin VI + I,8-9; Anal fin 1,8-9; Pectoral fin 15-17; Pelvic fin 1,4; Caudal fin, branched rays 11-15, segmented rays 17; Lateral scale rows 23-25; Transverse scale rows 5-6; Vertebrae, 10+16=26. 
Pectoral-fin rays more often simple than branched, except rays 12 and 13, occasionally all rays unbranched; rays 1-10 never branched; first dorsal-fin spine filamentous in males, rarely in females; fifth pelvic-fin ray rudimentary or absent.First dorsal spine of male may be elongate or filamentous, the longest extending to end of second dorsal fin base.Scales with 20-37 ctenii, 6-16 radii; breast scaleless.


The specific name is from the Greek mono- (= one), and stigma (= mark or spot), in reference to the black blotch on the pectoral-fin base,

Species Citation

Eviota monostigma Fourmanoir 1971, Cahiers O.R.S.T.O.M. Serie Océanographique 9(4): 498, fig. 6. Type locality: Pointe Ma, Îlot Maître, New Caledonia. 


Bray, D.J. 2020


Atlas of Living Australia

Singlespot Eviota, Eviota monostigma Fourmanoir 1971


Fourmanoir, P. 1971. Notes Ichthyologiques (IV). Cahiers O.R.S.T.O.M. Serie Océanographique 9(4): 491-500 figs 1-8 

Greenfield, D.W. 2017. An overview of the dwarfgobies, the second most speciose coral-reef fish genus (Teleostei: Gobiidae: Eviota). Journal of the Ocean Science Foundation 29: 32-54.

Greenfield, D., Larson, H. & Williams, J.T. 2016. Eviota monostigma. The IUCN Red List of Threatened Species 2016: e.T193228A2211834. Downloaded on 20 June 2019.

Greenfield, D.W. & Winterbottom, R. 2016. A key to the dwarfgoby species (Teleostei: Gobiidae: Eviota) described between 1871 and 2016. Journal of the Ocean Science Foundation 24: 35-90

Lachner, E.A. & Karnella, S.J. 1980. Fishes of the Indo-Pacific genus Eviota with descriptions of eight new species (Teleostei : Gobiidae). Smithsonian Contributions to Zoology 315: 1-127 figs 1-66

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. 

Russell, B.C. 1983. Annotated checklist of the coral reef fishes in the Capricorn-Bunker group, Great Barrier Reef, Australia. Great Barrier Reef Marine Park Authority. Special Publication Series 1: 1-184 figs 1-2

Quick Facts

CAAB Code:37428125

Conservation:IUCN Least Concern

Depth:1-21 m

Habitat:Reef associated

Max Size:2.7 cm SL

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