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Squalus albifrons
Last, White & Stevens, 2007
Eastern highfin spurdog
Classification: Elasmobranchii Squaliformes Squalidae
Reference of the original description
Part 5 - New species of Squalus of the highfin megalops group from the Australasian region. CSIRO Marine and Atmospheric Research Paper, 14, 39–53
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
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
Squalus cf. albifrons
Types
Squalus albifrons
Holotype: CSIRO: H 4627-01; Paratype: CSIRO: H 2487-02; CSIRO: H 644-04; CSIRO: H 449; CSIRO: H 2691-01; CSIRO: H 4704-02; CSIRO: H 4705-01; CSIRO: H 3589-01; CSIRO: H 2487-03; CSIRO: H 2487-01; QM: I 19327; QM: I 38077;
Squalus albifrons
Holotype: CSIRO: H 4627-01; Paratype: CSIRO: H 2487-02; CSIRO: H 644-04; CSIRO: H 449; CSIRO: H 2691-01; CSIRO: H 4704-02; CSIRO: H 4705-01; CSIRO: H 3589-01; CSIRO: H 2487-03; CSIRO: H 2487-01; QM: I 19327; QM: I 38077;
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 12/2024
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
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
Eastern highfin spurdog
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].
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].
Remarks
shark-references Species-ID=6694;
shark-references Species-ID=6694;
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