Squalus notocaudatus

LAST, WHITE & STEVENS, 2007


Bartail spurdog
Classification: Elasmobranchii Squaliformes Squalidae

Reference of the original description
LAST, P.R. & WHITE, W.T. & STEVENS, J.D. (2007)
Part 5 - New species of Squalus of the highfin megalops group from the Australasian region. CSIRO Marine and Atmospheric Research Paper, 14: 39–53

Image of the original description

Ventral view of the head of Squalus notocaudatus sp. nov. holotype (CSIRO H 1368–02, immature male 619 mm TL). In: LAST, P.R. & WHITE, W.T. & STEVENS, J.D. 2007 Part 5 - New species of Squalus of the highfin megalops group from the Australasian region. CSIRO Marine and Atmospheric Research Paper, 14: 39-53

Types
Squalus notocaudatus
Holotype: CSIRO: H 1368-02; Paratype: CSIRO: H 1321-01; CSIRO: H 1323-01; CSIRO: H 1322-01;


Description :


Citation: Squalus notocaudatus LAST, WHITE & STEVENS, 2007: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 11/2018

Please send your images of "Squalus notocaudatus" to info@shark-references.com

Ventral view of the head of Squalus notocaudatus sp. nov. holotype (CSIRO H 1368–02, immature male 619 mm TL). In: LAST, P.R. & WHITE, W.T. & STEVENS, J.D. 2007 Part 5 - New species of Squalus of the highfin megalops group from the Australasian region. CSIRO Marine and Atmospheric Research Paper, 14: 39-53
Common names
eng Bartail spurdog

Short Description
This species in the "quot;highfin megalops group"quot; is distinguished by the following set of characters: abdomen depth 8.6-11.1% TL; pre-vent length 45.3-46.5% TL, 1.9-2.0 times dorsal caudal margin; pre-second dorsal length 3.6-4.0 times pectoral-fin anterior margin, 2.4-2.6 times dorsal caudal margin; head width 1.4-1.6 times abdomen width; preoral length 2.8-3.2 times the horizontal prenarial length, 8.4-9.5% TL; head length 3.8-4.3 times its eye length; mouth width 3.4-4.3 times the length of upper labial furrow; interorbital width 1.4-1.5 times the horizontal preorbital length; fifth gill slit height 1.9-2.1% TL; strongly bifurcated anterior nasal flap; first dorsal fin upright, upper posterior margin almost vertical, greatest concavity closer to free rear tip than fin apex; posterior margin of second dorsal fin deeply concave; second dorsal-fin spine with a broad base; pectoral fin of adult weakly falcate, anterior margin long, 14.6-16.4% TL; both dorsal and ventral surfaces are pale; dorsal fins pale with obvious dark tips; first dorsal-fin spine and base of soft portion of dorsal fin both pale; caudal fin with broad white posterior margin; prominent dark, diagonal subterminal streak parallel to the upper posterior margin; flank denticles strongly tricuspid; monospondylous centra 47-49, precaudal centra 94-97, total centra 123-127 [3331].

Distribution
Western Pacific: Queensland, Australia. Source: www.gbif.org

Size / Weight / Age
61.9 cm TL (male/unsexed; [3331])

Habitat
pelagic-oceanic; marine; depth range 225 - 454 m [3331]

Remarks
63580