Rhynchobatus
| Rhynchobatus Temporal range:
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| Giant guitarfish (R. djiddensis) | |
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| Genus: | Rhynchobatus J. P. Müller & Henle, 1837
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| Type species | |
| Rhinobatus laevis Bloch & J. G. Schneider, 1801
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Rhynchobatus is a group of rays commonly known as wedgefishes in the family Rhinidae. They are found in the tropical and subtropical Indo-Pacific with a single species (R. luebberti) in the eastern Atlantic. All species in this genus are assessed as Vulnerable or Endangered by IUCN.
The species are superficially similar and have often been confused. The various species can generally be separated by a combination of snout shape, vertebral count and exact colour (distribution of white spots, and presence/absence of a black spot at the base of the pectoral fin).[2] The largest species can reach about 3 m (10 ft) and are among the largest species of rajiforms, but the smallest reach less than one-third of that size.[3]
Species
There are currently seven recognized species in this genus:[4] In the past all the Indo-Pacific species have been confused with R. djiddensis, which as presently defined is restricted to the western Indian Ocean.[2]
- Rhynchobatus australiae Whitley, 1939 (White-spotted wedgefish)
- Rhynchobatus djiddensis (Forsskål, 1775) (Giant guitarfish)
- Rhynchobatus cooki Last, Kyne & Compagno, 2016 (Roughnose wedgefish)[3]
- Rhynchobatus immaculatus Last, H. C. Ho & R. R. Chen, 2013 (Taiwanese wedgefish)[2]
- Rhynchobatus laevis (Bloch & J. G. Schneider, 1801) (Smoothnose wedgefish)
- Rhynchobatus luebberti Ehrenbaum, 1915 (African wedgefish)
- Rhynchobatus palpebratus Compagno & Last, 2008 (Eyebrow wedgefish)
- Rhynchobatus springeri Compagno & Last, 2010 (Broadnose wedgefish)
See also
References
- ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Chondrichthyes entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on 2008-02-23. Retrieved 2008-01-09.
{{cite journal}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ a b c Last, P.R., Ho, H.-C. & Chen, R.-R. (2013): A new species of wedgefish, Rhynchobatus immaculatus (Chondrichthyes, Rhynchobatidae), from Taiwan. Pp. 185-198 in: de Carvalho, M.R., Ebert, D.A., Ho, H.-C. & White, W.T. (eds.) : Systematics and biodiversity of sharks, rays, and chimaeras (Chondrichthyes) of Taiwan. Zootaxa, 3752 (1): 1–386.
- ^ a b Last, Kyne & Compagno (2016). A new species of wedgefish Rhynchobatus cooki (Rhinopristiformes, Rhinidae) from the Indo-West Pacific. Zootaxa 4139(2): 233-247. doi:10.11646/zootaxa.4139.2.7
- ^ Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Rhynchobatus in FishBase. July 2017 version.
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