Rhinobatos nudidorsalis

Last, Compagno & Nakaya, 2004

Classification: Elasmobranchii Rhinopristiformes Rhinobatidae

Reference of the original description
Last, P.R. & Compagno, L.J.V. & Nakaya, K. (2004)
Rhinobatos nudidorsalis, a new species of shovelnose ray (Batoidea: Rhinobatidae) from the Mascarene Ridge, central Indian Ocean. Ichthyological Research, 51, 153–158

Image of the original description
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Rhinobatos nudidorsalis
Holotype: HUMZ: 81478;

Description :

Citation: Rhinobatos nudidorsalis Last, Compagno & Nakaya, 2004: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 05/2024

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Short Description
This species is distinguished by the following characters: no thorns on upper surface of the disc, with tail and unpaired fins almost entirely naked; a small, elongate to oval-shaped denticle patch across a naked upper caudal peduncle and upper caudal-fin lobe; a wedge-shaped disc; moderately large orbit, exceeding 4% total length (TL); oblique nostrils, length 1.7 times internarial distance; anterior nasal flaps penetrating well into internarial space, but not almost united; posterior nasal flaps broad; ridges of rostral cartilages well separated dorsally and almost parallel; prebranchial sensory pore patch narrow, extending to first gill slit; postscapular sensory canal long with lateral pores, not grooved, extending almost to pectoral-fin insertions; low dorsal fins; pelvic-fin inner margin distinctly longer than its base; interdorsal distance less than 2.5 times first dorsal-fin base; 2 spiracular folds, outer is much larger than the inner one; caudal fin small with dorsal margin about 1.8 times preventral margin; 172 total vertebral centra; dorsal disc plain colored (Ref. 55722).

Central Indian Ocean: Mascarene Ridge.

Size / Weight / Age
50.1 cm TL (male/unsexed; (Ref. 55722))

demersal; marine; depth range ? - 125 m (Ref. 55722)

shark-references Species-ID=5957;