Three Twinspot Flounder, Pseudorhombus dupliciocellatus Regan 1905

Other Names: Cartwright's Flounder, Fourspot Flounder, Four-spot Flounder, Ocellated Flounder, Three Twin-spot Flounder

A Three Twinspot Flounder, Pseudorhombus dupliciocellatus, at Bohol, Philippines, May 2017. Source: zsispeo / Flickr. License: CC By Attribution-NonCommercial-ShareAlike

A mottled brownish to greyish flounder with one or two pairs of distinct double ocelli above and below the lateral line, many darker rings scattered on the body and fins, and a black mask-like area around the eye, snout and mouth.

Cite this page as:
Bray, D.J. 2022, Pseudorhombus dupliciocellatus in Fishes of Australia, accessed 23 Sep 2023,

Three Twinspot Flounder, Pseudorhombus dupliciocellatus Regan 1905

More Info


Garden Island, Western Australia, around the tropical north, to Sydney, New South Wales. Elsewhere the species is widespread in the Indo-west Pacific. Inhabits sandy and muddy areas, usually at depths below 50 m.


Dorsal fin 72-78; Anal fin 56-63; Pectoral fin (eyed side) 1-12; Gill rakers (lower limb) 8-9; Lateral-line scales 73-84; Vertebrae 36-37. 
Body ovoid, depth 2.2-2.4 in SL; teeth in jaws small, without strong canines; gill rakers palmate, as broad as long; scales ctenoid on eyed side, cycloid on blind side. 


Feeds on bottom-dwelling prey including fishes, crustaceans, molluscs and polychaetes.


Taken in bottom trawl fisheries.


The specific name dupliciocellatus is from the Latin duplico- (= double, twofold) and  ocellatus (= having eye-like spots) in reference to the double eyespots (two ocelli in one ring) on the eyed-side of this species.

Species Citation

Pseudorhombus dupliciocellatus Regan 1905, Annals and Magazine of Natural History 7 15(2): 25. Type locality: Kobe, Inland Sea of Japan.


Bray, D.J. 2022


Atlas of Living Australia

Three Twinspot Flounder, Pseudorhombus dupliciocellatus Regan 1905


Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Perth : Western Australian Museum 292 pp. 106 pls. 

Allen, G.R. & Swainston, R. 1988. The Marine Fishes of North-Western Australia. A field guide for anglers and divers. Perth, WA : Western Australian Museum vi 201 pp., 70 pls. 

Amaoka, K. 1969. Studies on the sinestral flounders found in the waters around Japan. Taxonomy, anatomy, and physiology. Journal of the Shimonoseki College of Fisheries 18: 65-340 

Amaoka, K. & Hensley, D.A. 2001. Paralichthyidae. pp. 3842-3862 in Carpenter, K.E. & Niem, T.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 6 pp. 3381-4218. 

Blaber, S.J.M., Brewer, D.T. & Harris, A.N. 1994. Distribution, biomass and community structure of demersal fishes of the Gulf of Carpentaria, Australia. Australian Journal of Marine and Freshwater Research 45(3): 375-396.

Gloerfelt-Tarp, T. & Kailola, P.J. 1984. Trawled Fishes of Southern Indonesia and Northwest Australia. Jakarta : Dir. Gen. Fish. (Indonesia), German Tech. Coop., Aust. Dev. Ass. Bur. 406 pp.

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) 

Kuiter, R.H. & Tonozuka, T. 2001. Pictorial guide to Indonesian reef fishes. Part 3. Jawfishes - Sunfishes, Opistognathidae - Molidae. Melbourne : Zoonetics pp. 623–893.

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 

Norman, J.R. 1934. A Systematic Monograph of the Flatfishes (Heterosomata) Psettodidae, Bothidae, Pleuronectidae. London : British Museum Vol. 1 459 pp. 317 figs. 

Ogilby, J.D. 1912. On some Queensland fishes. Memoirs of the Queensland Museum 1: 26-65 2 figs pls 13-14 (described as Pseudorhombus cartwrighti, type locality Moreton Bay, Queensland)

Regan, C.T. 1905. On a collection of fishes from the inland sea of Japan made by Mr. R. Gordon Smith. Annals and Magazine of Natural History 7 15(2): 17-26 See ref at BHL

Russell, B.C. & Houston, W. 1989. Offshore fishes of the Arafura Sea. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 6(1): 69-84 

Sainsbury, K.J., Kailola, P.J. & Leyland, G.G. 1984. Continental Shelf Fishes of Northern and North-Western Australia. Canberra : Fisheries Information Service 375 pp. figs & pls.

Quick Facts

CAAB Code:37460004

Conservation:IUCN Least Concern

Depth:10-150 m

Habitat:Sandy and muddy areas

Max Size:40 cm SL

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