Eyebrow Wedgefish, Rhynchobatus palpebratus Compagno & Last 2008


Other Names: Eyebrow Wedgefish

Eyebrow Wedgefish, Rhynchobatus palpebratus. Source: Australian National Fish Collection, CSIRO. License: CC by Attribution-NonCommercial

Summary:
A yellowish-grey wedgefish with large, distinct black ocelli on the pectoral-fin bases and sometimes behind the spiracles. The Eyebrow Wedgefish also has white spots on the pectoral disc and tail, a prominent white anterior margin on the pectoral disc, and black eye-brow like markings on the orbital membrane.

Cite this page as:
Bray, D.J. 2017, Rhynchobatus palpebratus in Fishes of Australia, accessed 19 Nov 2018, http://fishesofaustralia.net.au/home/species/2640

Eyebrow Wedgefish, Rhynchobatus palpebratus Compagno & Last 2008

More Info


Distribution

Exmouth, Western Australia, to off Cairns, Queensland. Elsewhere the species occurs in the tropical West Pacific.

Features

Snout long, narrowly pointed, not bottle-shaped or broadly wedge-shaped; preoral snout 17–22% of total length. Eyes small, lengths 3.7–4.0 in preorbital snout; interorbital space 2.6–2.8 in preorbital snout. Mouth hardly bowed, with a strong indentation on upper jaw near symphysis and strong protuberance on lower jaw. no spines on dorsal snout. Supraorbital spines very small, spines in mid-dorsal row similarly small; single weak row of small scapular spines on each side. Enlarged dorsal spines light-coloured. Origin of first dorsal fin over origin of pelvic fin; predorsal length 43–48% of total length. Propterygial radials 3–7 + 20–23 = 25–29, mesopterygial radials 3–5 + 5–7 = 9–12, metapterygial radials 24–28, total radials 62–65. Vertebrae: 12–14 synarcual centra, 25–35 monospondylous precaudal centra, 61–72 diplospondylous precaudal vertebrae, 35–44 caudal centra, 130–139 free centra, 144–152 total centra.

Colour

Yellowish grey with white spots on pectoral disc and tail; pectoral disc with a prominent white anterior margin; black eye-brow like markings on orbital membrane; large, sharp-edged, black ocelli on pectoral-fin bases and sometimes behind spiracles.

Species Citation

Rhynchobatus palpebratus Compagno & Last 2008, CSIRO Marine and Atmospheric Research Paper No. 022: 230, Figs 1-3. Type locality: north-west of Wessel Islands, Arafura Sea, NT [10°11'S, 137°17'E].

Author

Bray, D.J. 2017

Resources

Australian Faunal Directory

Eyebrow Wedgefish, Rhynchobatus palpebratus Compagno & Last 2008

References


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

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.

Last, P.R., Séret, B. & Naylor, G.J.P. 2016. A new species of guitarfish, Rhinobatos borneensis sp. nov. with a redefinition of the family-level classification in the order Rhinopristiformes (Chondrichthyes: Batoidea). Zootaxa 4117(4): 451-475, DOI: http://dx.doi.org/10.11646/zootaxa.4117.4.1 Abstract

Last, P.R. & Stevens, J.D. 1994. Sharks and Rays of Australia. Canberra : CSIRO Australia 513 pp. 84 pls. (as Rhynchobatus djiddensis, in part) 

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

Last, P.R., White, W.T. & Séret, B. 2016. 9. Wedgefishes. Family Rhinidae. In: Last, P.R., White, W.T., Carvalho, M.R. de, Séret, B., Stehmann, M.F.W. & Naylor, G.J.P. (eds) Rays of the World. Clayton South, Victoria : CSIRO Publishing 790 pp.

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: 837–1037. doi: 10.1111/jfb.12874

Quick Facts


CAAB Code:37026004

Depth:5-61 m

Max Size:103 cm TL

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Species Maps

CAAB distribution map