Filament Cusk, Homostolus acer Smith & Radcliffe 1913

A Filament Cusk, Homostolus acer, off Quezon, Philippines. Source: Rodolfo B Reyes / FishBase. License: CC By Attribution-NonCommercial

Cite this page as:
Bray, D.J. 2020, Homostolus acer in Fishes of Australia, accessed 23 Jul 2024,

Filament Cusk, Homostolus acer Smith & Radcliffe 1913

More Info


South-west of Point Cloates to north-west of Cape Leveque, Western Australia, and off Swains Reefs, Coral Sea, Queensland, to off Sydney, New South Wales. Elsewhere the species occurs in the east-Indo-west Pacific.


Body elongate, snout pointed; eye diameter equal to or longer than snout; jaw teeth granular in narrow bands; opercular spine sharp and straight; 1-3 sharp spines on lower margin of preopercle; median basibranchial tooth patch 1; developed rakers on anterior gill arch 27-42; pectoral fins low on body; each pelvic fin with 1 ray longer than head; precaudal vertebrae 13.


The specific name acer is from the Latin acro- (= sharp) possibly in reference to the elongate, sharply pointed and compressed head.

Species Citation

Homostolus acer Smith & Radcliffe, in Radcliffe 1913, Proceedings of the United States National Museum 44(1948): 147, pl.8 (fig. 3). Type locality: Iligan Bay, Mindanao, 8°17'24"N, 124°11'42"E, Philippines, Albatross station 5508, depth 270 fathoms.


Bray, D.J. 2020


Atlas of Living Australia

Filament Cusk, Homostolus acer Smith & Radcliffe 1913


Machida, Y. & Okamura, O. 1992. Revision of the bathyal fish genus Homostolus (Ophidiiformes, Ophidiidae). Japanese Journal of Ichthyology 38(4): 341-347 

Nielsen, J.G. 1997. Deepwater ophidiiform fishes from off New Caledonia with six new species. In, Séret, B. (ed.) Résultats des Campagnes MUSORSTOM 17. Mémoires du Muséum national d'Histoire naturelle, Paris [1936-1950] 174: 51-82 

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.

Smith, H.M. & Radcliffe, L. in Radcliffe, L. 1913. Descriptions of seven new genera and thirty-one new species of fishes of the families Brotulidae and Carapidae from the Philippine Islands and the Dutch East Indies. Proceedings of the United States National Museum 44(1948): 135-176 pls 7-17 See ref at BHL

Williams, A., Last, P.R., Gomon, M.F. & Paxton, J.R. 1996. Species composition and checklist of the demersal ichthyofauna of the continental slope off Western Australia (20–35º). Records of the Western Australian Museum 18: 135-155

Quick Facts

CAAB Code:37228028

Depth:300-1000 m

Habitat:Benthopelagic, upper slope

Max Size:19 cm SL

Species Image Gallery

Species Maps

CAAB distribution map