Largetooth Flounder, Pseudorhombus arsius (Hamilton-Buchanan 1822)

Other Names: Large-tooth Flounder, Large-toothed Flounder

A Largetooth Flounder, Pseudorhombus arsius, at Clifton Gardens, Sydney Harbour, New South Wales. Source: John Turnbull / Flickr. License: CC by Attribution-NonCommercial-ShareAlike

Cite this page as:
Pseudorhombus arsius in Fishes of Australia, accessed 20 Aug 2019,

Largetooth Flounder, Pseudorhombus arsius (Hamilton-Buchanan 1822)

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Cockburn Sound, Western Australia, around the tropical north to the Gippsland Lakes, Victoria, and from Cape Jervis to off Venus Bay, South Australia; also Ashmore Reef in the Timor Sea, and reefs in the Coral Sea. The Largetooth Flounder is mostly absent from Victoria and Tasmania.Elsewhere the species is widespread in tropical and subtropical areas from the East African coast to the Western Central Pacific.
Inhabits silty and sandy areas in estuaries and coastal waters at depths of 15–70 m.


Dorsal fin 71–84; Anal fin 53–62; Caudal fin 15; Pectoral fin 12–13; Pelvic fin 6; Lateral-line scales 69–81; Gill rakers 1–7 + 8–15.
Body depth 43–56% SL; head length 28–30% SL, upper profile with slight notch in front of upper eye; upper eye diameter 16–23% HL; upper jaw length 37–46% HL; teeth small except for several pairs of enlarged canines anteriorly in each jaw; gill rakers pointed, longer than broad; scales ctenoid on eyed side, cycloid on blind side; dorsal fin origin above anterior nostrils.


Eyed side greenish or brownish with dark blotch at front of straight part of lateral line and 2nd midway to tail, often with large dark spots or rings, sometimes encircled with small whitish spots;  fins with small dark brown spots;  blind side whitish.

Species Citation

Pleuronectes arsius Hamilton 1822, An Account of the Fishes Found in the River Ganges and its Branches: 128, 373. Type locality: estuary below Calcutta, India


Australian Faunal Directory

Largetooth Flounder, Pseudorhombus arsius (Hamilton-Buchanan 1822)


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De Vis, C.W. 1886. Donations. Queensland Museum (Report of Board of Trustees for the year 1885) 1885: 1-15 (as Neorhombus ocellatus)

Gomon, M.F. 1994. Family Bothidae. pp. 844-850, figs 747-752 in Gomon, M.F., Glover, C.J.M. & Kuiter, R.H. (eds). The Fishes of Australia's South Coast. Adelaide : State Printer 992 pp. 810 figs. 

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Quick Facts

CAAB Code:37460009

Depth:3-178 m

Habitat:Sandy/muddy areas

Max Size:45 cm SL

Species Image Gallery

Species Maps

CAAB distribution map