Falsespine Catfish, Neosilurus pseudospinosus Allen & Feinberg 1998


Other Names: False-spined Catfish

Falsespine Catfish, Neosilurus pseudospinosus. Source: Gerald R. Allen / Western Australian Museum. License: All rights reserved

Summary:
A dark grey to black eel-tailed catfish (sometimes mottled), with black fins and a paler underside. The dorsal and pectoral-fin spines are weak, flexible and not serrated.

Cite this page as:
Gomon, M.F. & Bray, D.J. 2017, Neosilurus pseudospinosus in Fishes of Australia, accessed 18 Oct 2018, http://fishesofaustralia.net.au/home/species/3306

Falsespine Catfish, Neosilurus pseudospinosus Allen & Feinberg 1998

More Info


Distribution

Widespread in tropical creeks and rivers of the Kimberley region of Western Australia, to the Victoria River system of the Northern Territory.

The Falsespine Catfish inhabits streams and rocky pools in slow to swift-moving water. Individuals swim close to the bottom.

Features

Dorsal fin I, 4; Anal fin 71-83; Caudal fin 8-10; Pectoral fin I, 11-13; Pelvic fin 13-15; Dorsal-Caudal-Anal rays 109-136;gill rakers 5-8 + 12-16; Vertebrae 49-52; Branchiostegal rays 8-10.

Body elongate and tapering posteriorly; head more or less conical but flattened on ventral surface; dorsal profile of head nearly straight, slightly arched; snout pointed in lateral view; mouth subterminal; lips fleshy; anterior nostril forming a low rimmed tube on upper lip; posterior nostril a narrow slit immediately behind nasal barbel; eyes relatively small; nasal barbel almost reaches to eye; maxillary and outer mental barbels approximately equal, reaching to gill margin; inner metal barbel slightly shorter; slender conical teeth in upper and lower jaws, with lunate patch of larger conical teeth on palate; branchiostegal rays 8-10.

Scales absent, covered in smooth skin. Dorsal and pectoral fin spines weak and flexible; 1st dorsal fin small but tall, tip pointed, originating in front of level of ventral fins ; 2nd dorsal confluent with caudal and anal fins, originating far back near end of body; pectoral fins inserted just behind opercular margin, tips pointed.

Size

Maximum size to about 35 cm.

Colour

Usually dark grey to black on the body (sometimes mottled), with black fins and a whitish ventral surface.

Feeding

Feeds on terrestrial and aquatic insects, crustaceans, molluscs, detritus and algae.

Biology

Little is known of the reproductive biology of this species. Spawning is likely to occur during the wet season.

Similar Species

Closely resembles Neosilurus mollespiculum, the only other Australian Eel-tailed catfish which lacks rigid dorsal and pectoral spines, but has longer nasal barbels.

Etymology

The species name pseudospinosus refers to the characteristic soft, flexible dorsal spine.

Species Citation

Neosilurus pseudospinosus Allen & Feinberg 1998, Aqua, J. Ichthyol. Aquat. Biol. 3(1): 15, figs 4-5. Type locality: Rocky pool of Ord River on Old Lissadel Station, Kimberley District, WA [16°40’S, 128°83’E]

Author

Gomon, M.F. & Bray, D.J. 2017

Resources

Australian Faunal Directory

Falsespine Catfish, Neosilurus pseudospinosus Allen & Feinberg 1998

References


Allen, G.R. 1988. Freshwater Fishes of Australia. An annotated checklist. Ringwood, Victoria, Australia : New Guinea Fishes Association, Ringwood, Victoria : 8 pp.

Allen, G.R. 1989. Freshwater Fishes of Australia. Neptune, New Jersey : T.F.H. Publications 240 pp., 63 pls.

Allen, G.R. & Feinberg, M.N. 1998. Descriptions of a new genus and four new species of freshwater catfishes (Plotosidae) from Australia. Aqua, Journal of Ichthyology and Aquatic Biology 3(1): 9-18 figs 1-6

Allen, G.R., Midgley, S.H. & Allen, M. 2002. Field Guide to the Freshwater Fishes of Australia. Perth : Western Australian Museum 394 pp.

Morgan, D.L., Allen, G.R., Pusey, B.J. & Burrows, D.W. 2011. A review of the freshwater fishes of the Kimberley region of Western Australia. Zootaxa 2816: 1-64

Morgan, D.L., Allen, M.G., Bedford, P. & Horstman, M. 2004. Fish fauna of the Fitzroy River in the Kimberley region of Western Australia – including the Bunuba, Gooniyandi, Ngarinyin, Nyikina and Walmajarii Aboriginal names. Records of the Western Australian Museum 22: 147-161

Unmack, P.J. 2001. Biogeography of Australian freshwater fishes. Journal of Biogeography 28: 1053-1089

Quick Facts


CAAB Code:37192019

Danger:Venomous spines

Habitat:Freshwater streams

Max Size:35 cm TL

Native:Endemic

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