Squalus albifrons

LAST, WHITE & STEVENS, 2007


Eastern 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 albifrons sp. nov. holotype (CSIRO H 4627–01, adult male 618 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

Synonyms / new combinations and misspellings
Squalus cf. albifrons



Description :


Citation: Squalus albifrons 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 albifrons" to info@shark-references.com

Ventral view of the head of Squalus albifrons sp. nov. holotype (CSIRO H 4627–01, adult male 618 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 Eastern highfin spurdog

Short Description
This large species belonging to the "quot;highfin megalops group"quot; has the following set of characters: abdomen depth 10.4-12.6% TL; pre-vent length 46.9-48.1% TL, 2.0-2.2 times dorsal caudal margin; pre-second dorsal length 3.7-4.3 times the pectoral-fin anterior margin, 2.5-2.8 times dorsal caudal margin; head width 1.0-1.4 times abdomen width; preoral length 2.9-3.1 times horizontal prenarial length, 8.4-9.1% TL; head length 4.3-4.9 times its eye length; mouth width 3.3-4.1 times length of upper labial furrow; interorbital width 1.5-1.7 times the horizontal preorbital length; fifth gill slit height 2.1-2.5% TL; strongly bifurcated anterior nasal flap; first dorsal fin upright, upper posterior margin directed posteroventrally, greatest concavity about midway between free rear tip and fin apex; posterior margin of second dorsal fin deeply concave; second dorsal-fin spine with a broad base; pectoral fin of adult not falcate, anterior margin long, 14.2-15.8% TL; dorsal surface dark, sharply demarcated from paler ventral surface on side of head; dorsal fins are dark with obvious darker tips; first dorsal-fin spine distinctly paler than the base of soft portion of dorsal fin; caudal fin with broad white posterior margin, caudal bar absent; flank denticles weakly tricuspid; monospondylous centra 44-46, precaudal centra 89-93, total centra 116-122 [3331].

Distribution
Western Pacific: eastern Australia. Source: www.gbif.org

Size / Weight / Age
74.0 cm TL (male/unsexed; [3331]); 86 cm TL (female)

Habitat
pelagic-oceanic; marine; depth range 131 - 450 m [3331]

Remarks
shark-references Species-ID=6694;