Squalus altipinnis

LAST, WHITE & STEVENS, 2007


Western highfin 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

Lateral view of: Squalus altipinnis sp. nov. holotype (CSIRO CA 4111, adult male 586 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 altipinnis
Holotype: CSIRO: CA 4111; Paratype: CSIRO: CA 3297;


Description :


Citation: Squalus altipinnis LAST, WHITE & STEVENS, 2007: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2018

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

Ventral view of the head of Squalus altipinnis sp. nov. holotype (CSIRO CA 4111, adult male 586 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 Western highfin spurdog

Short Description
This species of the "quot;highfin megalops group"quot; is distinguished by the following set of characters: abdomen depth 9.0-10.6% TL; pre-vent length 48.6-49.2% TL, about 2.5 times dorsal caudal margin; pre-second dorsal length 4.3-4.4 times pectoral-fin anterior margin, about 3.1 times dorsal caudal margin; head width about 1.5 times abdomen width; preoral length 2.9-3.2 times horizontal prenarial length, about 8.7% TL; head length 4.4-4.7 times eye length; mouth width 3.1-3.3 times length of upper labial furrow; interorbital width about 1.5 times horizontal preorbital length; fifth gill slit height 2.2-2.5% TL; strongly bifurcated anterior nasal flap; first dorsal fin upright, upper posterior margin directed posteroventrally, greatest concavity slightly 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 not falcate, anterior margin short, 13.9-14.1% TL; dorsal surface slightly darker than ventral surface, but tones not sharply demarcated on side of head; dorsal fins pale with paler tips; first dorsal-fin spine darker than base of soft portion of dorsal fin; caudal fin has a broad white posterior margin, caudal bar absent; flank denticles are weakly to moderately tricuspid; monospondylous centra 42-44, precaudal centra 88-92, total centra 114-120 [3331].

Distribution
Eastern Indian Ocean: off NW Australia. Source: www.gbif.org

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

Habitat
pelagic-oceanic; marine; depth range 298 - 305 m [3331]

Remarks
shark-references Species-ID=6699;