Natal Lefteye Flounder, Arnoglossus dalgleishi (von Bonde 1922)

Other Names: East Coast Flounder

Illustration of Arnoglossus dalgleishi. Source: FAO / EOL. License: CC BY Attribution-Noncommercial


Dorsal and anal fins with a regular series of dark blotches, the first 3 rays of the pelvic fin on eyed side dark, the first 3 dorsal-fin rays dark, and a large mouth large, with the upper jaw extending beyond the middle of the eye.

Cite this page as:
Bray, D.J. 2024, Arnoglossus dalgleishi in Fishes of Australia, accessed 13 Jun 2024,

Natal Lefteye Flounder, Arnoglossus dalgleishi (von Bonde 1922)

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Southern Great Barrier Reef to Brisbane, Queensland (and possibly further south to Sydney Harbour). Elsewhere the species occurs in the Indo-west Pacific.

Inhabits soft sediments on the continental shelf in depths of 104-148 metres (in Australia).


Dorsal fin 101-108; Anal fin 78-83; Pectoral fin 14-16 (eyed side) & 11-12 (blind side); Lateral line scales 73-86; Gill rakers 0 + (7-9).

Body depth 2.5 times in body length, head length almost 4 times in body length. Upper profile of head moderately convex above and behind eyes. Eye diameter 4 times in head length, snout about equal eye diameter; eyes separated by a sharp ridge, lower eye only slightly in advance of upper. Maxillary extending to below posterior half of eye, length about twice in head; lower jaw 15 times in head. Upper jaw teeth small, rather close-set laterally, some curved canines anteriorly; lateral teeth of lower jaw stronger and more widely-spaced than those of upper, somewhat enlarged anteriorly. Nine rather slender, pointed gill-rakers on lower part of anterior arch. Scales feebly ctenoid on ocular side. Pectoral fin on ocular side more than half head length. Caudal fin rounded. (from Norman 1936)


  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not Evaluated
  • Species Citation

    Trichopsetta dalgleishi von Bonde, 1922, Fish. Mar. Biol. Surv. South Africa 2(1): 6, Pl. 1 (fig. 1). Type locality:  KwaZulu-Natal, South Africa, southwestern Indian Ocean, Pickle station 171, depth 29 fathoms.


    Bray, D.J. 2024


    Atlas of Living Australia

    Natal Lefteye Flounder, Arnoglossus dalgleishi (von Bonde 1922)


    Bonde, C. von 1922. The Heterosomata (flat fishes) collected by the S.S. 'Pickle'. Report. Fisheries & Marine Biological Survey, Union of South Africa 2(1): 1-29.

    Fricke, R., Kulbicki, M. and Wantiez, L. 2011. Checklist of the fishes of New Caledonia, and their distribution in the Southwest Pacific Ocean (Pisces). Stuttgarter Beiträge zur Naturkunde A, Neue Serie 4: 341-463.

    Hensley, D.A. 1986. Family No. 269: Bothidae. pp. 854-863 in Smith, M.M. & Heemstra, P. (eds). Smith's Sea Fishes. Johannesburg : Macmillan South Africa xx + 1047 pp. 144 pls.

    Hensley, D.A. & Amaoka, K. 2001. Bothidae. pp. 3799-3841 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.

    Johnson, J.W. 2010. Fishes of the Moreton Bay Marine Park and adjacent continental shelf waters, Queensland, Australia. In: Davie, P.J.F. & Phillips, J.A. (Eds), Proceedings of the Thirteenth International Marine Biological Workshop, The Marine Fauna and Flora of Moreton Bay, Queensland. Memoirs of the Queensland Museum – Nature 54(3): 299-353.

    Munroe, T.A. 2021. Arnoglossus dalgleishi. The IUCN Red List of Threatened Species 2021: e.T123495235A123517560. Downloaded on 18 November 2021.

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

    Quick Facts

    CAAB Code:37460084

    Conservation:IUCN Data Deficient

    Depth:50-220 m


    Max Size:19 cm TL

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