Notoraja azurea

McEACHRAN & LAST, 2008



Classification: Elasmobranchii Rajiformes Arhynchobatidae

Reference of the original description
MCEACHRAN, J.D. & LAST, P.R. (2008)
New deepwater skates of the genus Notoraja (Rajoidei: Arhynchobatidae) from southern Australia and the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 21: 155–172

Image of the original description

Notoraja azurea sp. nov., adult male holotype (CSIRO H 170–01, 621 mm TL, preserved): A, dorsal surface; B, ventral surface. In: McEACHRAN, J.D. & LAST, P.R. 2008 New deepwater skates of the genus Notoraja (Rajoidei: Arhynchobatidae) from southern Australia and the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 21: 155-172



Description :


Citation: Notoraja azurea McEACHRAN & LAST, 2008: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2018

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Dorsal surface of Notoraja azurea sp. nov. female paratype (CSIRO H 1256–01, 603 mm TL, fresh); In: McEACHRAN, J.D. & LAST, P.R. 2008 New deepwater skates of the genus Notoraja (Rajoidei: Arhynchobatidae) from southern Australia and the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 21: 155-172
Common names
eng Blue skate

Short Description
Original diagnosis after McEACHRAN & LAST, 2008 [3316]: A moderately large species of Notoraja with the following combination of characters: disc width 52.2–57.0% of TL; preorbital snout length 11.1–14.5% TL; pre-upper jaw length 12.0–14.2% TL; tail length from posterior margin of cloaca to tip of tail 56.3–61.7% TL; dorsal surface of disc largely free of dermal denticles and ventral surface of tail naked; thorns absent on rostrum; anterior half of tail with two main, irregular rows of thorns on dorsolateral aspect; oronasal pits absent; tooth rows number 32–43 in upper jaw and 32–39 in lower jaw; pectoral-fin radials number 66–69; trunk centra 25–27; predorsal caudal centra 76–80; rostral appendices about 71.2% of nasobasal length, subconical in cross section posteriorly and connected to rostral shaft at node; scapulocoracoid elongate and with slender and narrow anterior bridge; dorsal surface greyish blue, darker greyish brown ventrally.

Distribution
Indo-West Pacific: Australia. Source: www.gbif.org

Size / Weight / Age
64.5 cm TL (male/unsexed; [3316])

Habitat
demersal; marine; depth range 765 - 1440 m [3316]

Remarks
shark-references Species-ID=4175;