Blotched Flounder, Asterorhombus intermedius (Bleeker 1866)

Other Names: Intermediate Flounder

A Blotched Flounder, Asterorhombus intermedius, at Lembeh, Sulawesi, Indonesia, 2014. Source: Jim Greenfield / FishBase. License: All rights reserved

A brown mottled flounder with three rows of pale black-edged spots - along the lateral line, and along the dorsal and ventral body margins, and an elongate first dorsal-fin ray separated from the rest of the fin with a narrow fringed membrane along the outer half to two-thirds of the ray.

Cite this page as:
Bray, D.J. 2018, Asterorhombus intermedius in Fishes of Australia, accessed 02 Mar 2024,

Blotched Flounder, Asterorhombus intermedius (Bleeker 1866)

More Info


Exmouth Gulf, Western Australia (possibly further south), to off Cape Moreton, Queensland. Elsewhere the species occurs in the tropical, Indo-west-central Pacific from the Red Sea and East Africa, to Tonga.
Inhabits sandy and muddy bottoms, and seagrass beds, sometimes near reefs.

Species Citation

Platophrys (Arnoglossus) intermedius Bleeker 1865, Nederland. Tijdschr. Dierkunde 3: 47. Type locality: Menado, Sulawesi, Indonesia.


Bray, D.J. 2018


Australian Faunal Directory

Blotched Flounder, Asterorhombus intermedius (Bleeker 1866)


Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp.

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. & Arai, M. 1998. Redescription of a rare bothid, Asterorhombus bleekeri (Macleay), and description of a new species of Asterorhombus from northwestern Australia (Teleostei: Pleuronectiformes). Ichthyological Research 45(3): 249-257.

Amaoka, K. & Mihara, E. 2001. Asterorhombus annulatus (Weber, 1913), a valid species distinct from Asterorhombus intermedius (Bleeker, 1865) (Pleuronectiformes: Bothidae). Ichthyological Research 48: 192-196.

Bleeker, P. 1865. Description de quelques espèces inédites des genres Pseudorhombus et Platophrys de l'Inde archipélagique. Nederlandsch Tijdschrift voor de Dierkunde 3: 43-50 

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.

Hensley, D.A. 2005. Revision of the genus Asterorhombus (Pleuronectiformes: Bothidae). Copeia 2005(3): 445-460.

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. 

Hutchins, J.B. 2003. Checklist of marine fishes of the Dampier Archipelago, Western Australia. pp. 453-478 in Wells, F.E., Walker, D.I., & Jones, D.S. (eds). Proceedings of the Eleventh International Marine Biological Workshop: The Marine Flora and Fauna of Dampier, Western Australia. Perth : Western Australian Museum. 

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.

Larson, H.K. & Williams, R.S. 1997. Darwin Harbour fishes: a survey and annotated checklist. pp. 339-380 in Hanley, H.R., Caswell, G., Megirian, D. & Larson, H.K. (eds). The Marine Flora and Fauna of Darwin Harbour, Northern Territory, Australia. Proceedings of the Sixth International Marine Biology Workshop. Darwin : Museum and Art Gallery of the Northern Territory 466 pp.

Manabe H. & Shinomiya A. 1998. Use of the first dorsal fin ray as a lure by the bothid flounder, Asterorhombus intermedius. Japanese Journal of Ecology (Japan) 48(2): 117-121.

Munroe, T. 2016. Asterorhombus intermedius. The IUCN Red List of Threatened Species 2016: e.T69741958A69742836. Downloaded on 10 February 2018.

Norman, J.R. 1926. A report on the flatfishes (Heterosomata) collected by the F.I.S. Endeavour, with a synopsis of the flatfishes of Australia and a revision of the subfamily Rhombosoleinae. Biological Results of the Fishing Experiments carried on by the F.I.S. Endeavour 1909-1914 5(5): 219-308 figs 1-15 

Sainsbury, K.J., Kailola, P.J. & Leyland, G.G. 1985. Continental Shelf Fishes of Northern and North-Western Australia. Canberra : Fisheries Information Service 375 pp. figs & pls.

Shirai, Y. & Kitazawa, H. 1998. Peculiar feeding behavior of Asterorhombus intermedius in an aquarium. Japanese Journal of Ichthyology 45(1): 47-50.

Quick Facts

CAAB Code:37460046

Conservation:IUCN Least Concern

Depth:0-96 m

Habitat:Sandy, muddy bottoms

Max Size:15 cm TL

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Species Maps

CAAB distribution map