Natal Lefteye Flounder, Arnoglossus dalgleishi (von Bonde 1922)
Illustration of Arnoglossus dalgleishi. Source: FAO / EOL. License: CC BY Attribution-Noncommercial
A greyish-brown flounder with a regular series of dark blotches on the dorsal and anal fins, the last 3 pelvic-fin rays on the eyed side dark, the first 3 dorsal-fin rays dark, and a large mouth with the upper jaw extending beyond the middle of the eye.
Natal Lefteye Flounder, Arnoglossus dalgleishi (von Bonde 1922)
More Info
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Distribution |
Off Swains Reefs, Great Barrier Reef, Queensland, to Sydney, New South Wales. Elsewhere the species is known from widely separated localities in the Indo-West Pacific: South Africa, Mozambique, Indonesia, Australia and New Caledonia. |
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Features |
Dorsal fin 101-108; Anal fin 78-84; Pectoral fin 14-16 (eyed side) & 10-12 (blind side); Gill rakers 0 + (7-9); Lateral line scales ~73-86. Body depth 2.4-2.8 times in SL, head length 3.6-3.9 in SL. 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 interorbital 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. Scales feebly ctenoid on ocular side. Pectoral fin on ocular side more than half head length. Caudal fin rounded. |
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Size |
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Conservation |
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Etymology |
Named in honour of Lieut. James Dalgleish, captain of the SS Pickle, the ship from which the type specimen was collected. |
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Species Citation |
Trichopsetta dalgleishi von Bonde, 1922, Report Fisheries and Marine Biological Survey, Union of South Africa Rep. 2(1): 6, Pl. 1 (fig. 1). Type locality: KwaZulu-Natal, South Africa, southwestern Indian Ocean, Pickle station 171, depth 29 fathoms. |
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Author |
Bray, D.J. 2025 |
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Resources |
Natal Lefteye Flounder, Arnoglossus dalgleishi (von Bonde 1922)
References
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. & 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.
Hensley, D. A. & Amaoka, K. 2022. Family Bothidae, Lefteye flounders, pp. 321-350 in Heemstra, P.C., Heemstra, E., Ebert, D.A., Holleman, W. & Randall, J.E. (eds). 2022. Coastal fishes of the western Indian Ocean. Volume 5. South African Institute for Aquatic Biodiversity, Makhanda, South Africa: i, 1-487, i-xi, Pls. 1-129. See ref online
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. https://dx.doi.org/10.2305/IUCN.UK.2021-2.RLTS.T123495235A123517560.en. 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. https://doi.org/10.5962/bhl.title.8585
