Japanese Lefteye Flounder, Arnoglossus japonicus Hubbs 1915
Illustration of a Japanese Lefteye Flounder, Arnoglossus japonicus, from Yaku-shima, Ryukyu Islands, Japan. Source: Smithsonian Institution, National Museum of Natural History, Division of Fishes. License: CC BY Attribution-Noncommercial-ShareAlike
Summary:
A pale brownish mottled and marbled flounder with no dark blotches on the pectoral or pelvic fins.
This species was previously known as Arnoglossus japonicus.
This species was previously known as Arnoglossus japonicus.
Cite this page as:
Bray, D.J. 2026, Arnoglossus japonicus in Fishes of Australia, accessed 04 Jun 2026, https://fishesofaustralia.net.au/home/species/941
Japanese Lefteye Flounder, Arnoglossus japonicus Hubbs 1915
More Info
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Distribution |
Northwest Shelf north of Nickol Bay, Western Australia, around the tropical north to Urunga, New South Wales. Elsewhere the species occurs in Indonesia, China, Taiwan, southern Japan and New Caledonia. Inhabits soft sediment areas with broken coral, mud, sand, gravel and shells. |
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Features |
Dorsal fin 99-106; Anal fin 76-83; Gill rakers (lower linb) 7-8, rakers short, pointed; Lateral-line scales 65-73. Body elliptical, elongate; interorbital region narrow with continuous bony ridge; head length 3.6–3.9 in SL; maxilla reaching to about middle of lower eye; anterior teeth of upper jaw larger than posterior teeth; lower jaw teeth widely spaced; a single row of teeth in jaws; no gill rakers on upper limb; cycloid scales on ocular side; 2nd dorsal fin ray elongated in males; caudal fin rounded. |
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Etymology |
The specific name refers to the type locality: Vincennes Strait, south of Kiusiu, Japan. |
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Species Citation |
Arnoglossus japonicus Hubbs 1915, Proceedings of the United States National Museum 48(2082): 454, pl. 25 (fig.2). Type locality: Vincennes Strait, south of Kiusiu, Japan, Albatross station 4930, depth 84 fathoms. |
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Author |
Bray, D.J. 2026 |
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Resources |
Japanese Lefteye Flounder, Arnoglossus japonicus Hubbs 1915
References
Amaoka, K. & Mihara, E. 2000. Pisces Pleuronectiformes: Flatfishes from New Caledonia and adjacent waters. Genus Arnoglossus. Mémoires du Muséum national d'Histoire naturelle, Paris 184: 783-813. (as Arnoglossus japonicus)
Fukui, A., Yamadea, U. & Ozawa, T. 1990. Redescription of Arnoglossus yamanakai (Pleuronectiformes: Bothidae) with description of the adults. Japanese Journal of Ichthyology 37(3): 215-223. (as Arnoglossus japonicus)
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. (as Arnoglossus japonicus)
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. (as Arnoglossus japonicus)
Hubbs, C.L. 1915. Flounders and soles from Japan collected by the United States Bureau of Fisheries steamer Albatross in 1906. Proceedings of the United States National Museum 48(2082): 449-496 pls 25-27 See ref at BHL (as Arnoglossus japonicus)
Munroe, T. 2016. Arnoglossus japonicus. The IUCN Red List of Threatened Species 2016: e.T69741220A69742754. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T69741220A69742754.en. Accessed on 21 January 2025. (as Arnoglossus japonicus)
Tongboonkua, P., Chanet, B. & Chen, W.-J. 2026. Integrated Molecular and Morphological Analyses Resolve Long-Standing Classification Challenges in the Sinistral Flatfish Family Bothidae (Teleostei: Carangiformes). Zoologica Scripta 55: 15-36. https://doi.org/10.1111/zsc.70020
