Twinhook Cusk, Diancistrus longifilis Ogilby 1899

Illustration of a Twinhook Cusk, Diancistrus longifilis. Source: FAO / FishBase. License: CC by Attribution-NonCommercial

This small secretive brotula shelters in crevices on reefs in Queensland and New South Wales.

Cite this page as:
Dianne J. Bray, Diancistrus longifilis in Fishes of Australia, accessed 13 Jul 2024,

Twinhook Cusk, Diancistrus longifilis Ogilby 1899

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Ashmore Reef, Coral Sea, and Lizard Island Great Barrier Reef to Brisbane, Queensland, reefs in the Coral Sea, and Lord Howe Island, Middleton and Elizabeth reefs, in the Tasman Sea. The species occurs elsewhere in the tropical, south-west Pacific.

Species Citation

Diancistrus longifilis Ogilby 1899, Proc. Linn. Soc. N.S.W. 23(4): 744. Type locality: Lord Howe Island.


Dianne J. Bray


Atlas of Living Australia

Twinhook Cusk, Diancistrus longifilis Ogilby 1899


Allen, G.R., Hoese, D.F., Paxton, J.R., Randall, J.E., Russell, B.C., Starck, W.A., Talbot, F.H. & Whitley, G.P. 1976. Annotated checklist of the fishes of Lord Howe Island. Records of the Australian Museum 30(15): 365-454 figs 1-2

Cohen, D.M. & Nielsen, J.G. 1978. Guide to the identification of genera of the fish order Ophidiiformes with a tentative classification of the order. National Marine Fisheries Service (U.S.). Technical Report 417: 1-72 figs 1-103

Francis, M. 1993. Checklist of the coastal fishes of Lord Howe, Norfolk, and Kermadec Islands, southwest Pacific Ocean. Pacific Science 47(2): 136-170 figs 1-2

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. Serie A (Biologie) Neue Serie 4: 341-463.

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

Nielsen, J.G., Cohen, D.M., Markle, D.F. & Robins, C.R. 1999. Ophidiiform Fishes of the World. An annotated and illustrated catalogue of pearlfishes, cusk-eels, brotulas and other ophidiiform species known to date. FAO Fisheries Synopsis No. 125 Vol. 18. 178 pp.

Nielsen. J.G. 1999. Families Carapidae, Ophidiidae, Bythitidae, Aphionidae. pp. 1978-1985 in Carpenter, K.E. & Niem, V.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 3 pp. 1397-2068.

Ogilby, J.D. 1899. Additions to the fauna of Lord Howe Island. Proceedings of the Linnean Society of New South Wales 23(4): 730-745.

Schwarzhans, W., Møller, P.R. & Nielsen, J.G. 2005. Review of the Dinematichthyini (Teleostei: Bythitidae) of the Indo-West Pacific. Part I. Diancistrus and two new genera with 26 new species. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 21: 73-163.

Quick Facts

CAAB Code:37228022

Biology:Live bearer

Depth:1-30 m

Habitat:Reef associated

Max Size:8 cm SL

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Species Maps

CAAB distribution map