Eastern Numbfish , Narcinops nelsoni Carvalho 2008


Other Names: Eastern Numbfish

Eastern Numbfish, Narcinops nelsoni. Source: CSIRO National Fish Collection. License: CC by Attribution

Summary:
A uniform pale brown numbfish, sometimes with a slightly darker brown streak on the top of the tail, and a uniformly pale underside. 
This species was previously known as Narcine nelsoni.

Cite this page as:
Hicks, T. & Bray, D.J. 2018, Narcinops nelsoni in Fishes of Australia, accessed 17 Nov 2018, http://fishesofaustralia.net.au/home/species/2644

Eastern Numbfish , Narcinops nelsoni Carvalho 2008

More Info


Distribution

Endemic to eastern Australia, from off Rockhampton to east of Dunk Island,  Queensland. The Eastern Numbfish occurs at depths of 140-540 metres along the continental shelf and slope.

Features

Body depressed, shovel-shaped disc reaching its widest point close to the pectoral fin insertion point. Small eyes, about the same size as spiracle; spiracle lacking papillae. Narrow mouth, internasal flap trilobed. Skin surface smooth and creased, no denticles or thorns. Tail relatively long, moderately depressed, gradually tapering. First and second dorsal fin about equal in size, first dorsal fin originating over or just behind rear tip of pelvic fin. Long, narrow pelvic fins. Caudal fin broadly rounded posteriorly. 

Size

Reaches at least 35 cm total length. Sexual maturity for both sexes is reached at 20-25 cm.

Colour

Dorsal surface generally a uniform light brown, sometimes with a streak of slightly darker brown on dorsal tail surface. Freshly collected specimens present a faint pinkish hue on edges of disc and ventrally on snout region and pelvic fins. Snout sometimes semi-transparent in freshly captured specimens, and generally more tan, lighter than rest of dorsal background color. Dorsal clasper surfaces light tan or off-white, with dorsal clasper glans area sometimes with shades of brown. Dorsal and caudal fins semi-transparent (more obvious in fresh material). Ventral surface is a uniform pale white to cream colour, without distinct markings.

Biology

Both sexes mature at 20–25 cm TL.

Etymology

Named after Gareth Jon Nelson, Marcelo Carvalho's PhD advisor at the American Museum of Natural History (New York), "in honor of his very unique and meaningful contributions to both ichthyology and comparative biology in general".

Species Citation

Narcine nelsoni Carvalho 2008, CSIRO Marine and Atmospheric Research Paper 22: 250, Figs 8-11. Type locality: south of Saumarez Reef, Capricorn Channel, 22°53– 57′ S, 152°59′–153°01′ E, 325–338 m, FRV Soela, S06/85/12.

Author

Hicks, T. & Bray, D.J. 2018

Resources

Australian Faunal Dorectory

Eastern Numbfish , Narcinops nelsoni Carvalho 2008

References


Carvalho, M.R. de. 1999. A systematic revision of the electric ray genus Narcine Henle, 1834 (Chondrichthyes: Torpediniformes: Narcinidae), and the higher-level relationships of the elasmobranch fishes (Chondrichthyes). Unpubl. PhD thesis. The City University of New York. (as Narcine sp. nov. C)

Carvalho, M.R. de 2008. New species of numbfishes from Australia, with a key to Australian electric rays of the genus Narcine Henle, 1834 (Chondrichthyes: Torpediniformes: Narcinidae). pp. 241-260 in Last, P.R., White, W.T. & Pogonoski, J.J. (eds). Descriptions of new Australian chondrichthyans. CSIRO Marine and Atmospheric Research Paper No. 022: 1-358 Ref. available online, open access

Carvalho, M.R. de, Compagno, L.J.V. & Last, P.R. 1999. Family Narcinidae. pp. 1433-1446 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. (as Narcine sp. nov. C)

Carvalho, M.R. de & Last, P.R. 2016. Family Narcinidae pp. 137-169. In: Last, P.R., White, W.T., de Carvalho, M.R., Séret, B., Stehmann, M.F.W. & & Naylor, G.J.P. (eds) Rays of the World. Melbourne: CSIRO Publishing, 800 pp.

Carvalho, M.R. de & Séret, B. 2002. Narcine lasti, a new species of numbfish from western Australia and Indonesia (Chondrichthyes: Torpediniformes: Narcinidae). Records of the Western Australian Museum 20: 393-408 (as Narcine sp. nov. C) Ref. available online, open access

Last, P.R. & Stevens, J.D. 1994. Sharks and Rays of Australia. Canberra : CSIRO Australia 513 pp. 84 pls. (as Narcine sp. C)

Last, P.R. & Stevens, J.D. 2009. Sharks and Rays of Australia. Collingwood : CSIRO Publishing Australia 2, 550 pp. (as Narcine nelsoni)

Rigby, C. 2015. Narcine nelsoni. The IUCN Red List of Threatened Species 2015: e.T195460A68635060. http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T195460A68635060.en. Downloaded on 23 January 2018.

Weigmann, S. 2016. Annotated checklist of the living sharks, batoids and chimaeras (Chondrichthyes) of the world, with a focus on biogeographical diversity. Journal of Fish Biology 88(3): 837-1037. (as Narcine nelsonihttps://doi.org/10.1111/jfb.12874  Abstract

Quick Facts


CAAB Code:37028008

Conservation:IUCN Least Concern

Danger:Electric ray

Depth:140-540 m

Max Size:35 cm TL

Native:Endemic

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CAAB distribution map