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Hemigaleus australiensis
White, Last & Compagno, 2005
Australian weasel shark
Classification: Elasmobranchii Carcharhiniformes Hemigaleidae
Reference of the original description
Description of a new species of weasel shark, Hemigaleus australiensis n. sp. (Carcharhiniformes : Hemigaleidae) from Australian waters. Zootaxa, 1077, 37–49
Description of a new species of weasel shark, Hemigaleus australiensis n. sp. (Carcharhiniformes : Hemigaleidae) from Australian waters. Zootaxa, 1077, 37–49
Image of the original description
Image in copyright.
Image in copyright.
Types
Hemigaleus australiensis
Holotype: CSIRO: H 5949-01; Paratype: CSIRO: CA 2506; CSIRO: CA 2507; CSIRO: CA 2508; CSIRO: CA 2505; CSIRO: H 6200-01; CSIRO: CA 2503; CSIRO: CA 2502; CSIRO: CA 2509; CSIRO: CA 2504; CSIRO: H 1482-04; CSIRO: H 5949-02;
Hemigaleus australiensis
Holotype: CSIRO: H 5949-01; Paratype: CSIRO: CA 2506; CSIRO: CA 2507; CSIRO: CA 2508; CSIRO: CA 2505; CSIRO: H 6200-01; CSIRO: CA 2503; CSIRO: CA 2502; CSIRO: CA 2509; CSIRO: CA 2504; CSIRO: H 1482-04; CSIRO: H 5949-02;
Description :
Citation: Hemigaleus australiensis White, Last & Compagno, 2005: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2024
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Common names
Australian weasel shark, Sickelfin weasel shark, Weasel shark
Australian weasel shark, Sickelfin weasel shark, Weasel shark
Short Description
Diagnosis: Medium-sized shark with moderately long head; dorsal fins slightly raked back, moderately or not falcate, moderately low; height of first dorsal fin 2.6-3 in head length (HL); length of first dorsal fin 2.1-2.4 times its height; caudal-fin upper lobe moderately broad, not elongate; caudal-fin ventral lobe short, preventral margin 9.3-9.8% TL; pectoral fins broad, falcate, base length 2.1-2.4 in preventral caudal margin; claspers of adults moderately short, inner length 5.4-5.6% TL, 1.8-1.8 in pelvic midpoint to first dorsal-fin insertion; teeth in 28-30/46-52 rows; precaudal vertebral centra 65-70, total vertebral centra 112-121; second dorsal fin with a conspicuous dark tip; first dorsal fin with a pale posterior margin [3389]. Description: The two species differ in meristics, coloration, morphometrics: with Hemigaleus australiensis having a total vertebrae 137-164 (vs. 112-121); precaudal vertebrae 79-100 (vs.65-70); number of tooth rows in lower jaw 45-52 (vs. 37-43); dark-tipped second dorsal fin (vs. white-tipped); size at maturity females 60-65 cm TL (vs. 74-80 cm TL) and males 60 cm TL (vs. >79 cm TL); size at birth 26-28 cm TL (vs. 47-49 cm TL) [3389].
Diagnosis: Medium-sized shark with moderately long head; dorsal fins slightly raked back, moderately or not falcate, moderately low; height of first dorsal fin 2.6-3 in head length (HL); length of first dorsal fin 2.1-2.4 times its height; caudal-fin upper lobe moderately broad, not elongate; caudal-fin ventral lobe short, preventral margin 9.3-9.8% TL; pectoral fins broad, falcate, base length 2.1-2.4 in preventral caudal margin; claspers of adults moderately short, inner length 5.4-5.6% TL, 1.8-1.8 in pelvic midpoint to first dorsal-fin insertion; teeth in 28-30/46-52 rows; precaudal vertebral centra 65-70, total vertebral centra 112-121; second dorsal fin with a conspicuous dark tip; first dorsal fin with a pale posterior margin [3389]. Description: The two species differ in meristics, coloration, morphometrics: with Hemigaleus australiensis having a total vertebrae 137-164 (vs. 112-121); precaudal vertebrae 79-100 (vs.65-70); number of tooth rows in lower jaw 45-52 (vs. 37-43); dark-tipped second dorsal fin (vs. white-tipped); size at maturity females 60-65 cm TL (vs. 74-80 cm TL) and males 60 cm TL (vs. >79 cm TL); size at birth 26-28 cm TL (vs. 47-49 cm TL) [3389].
Distribution
Eastern Indian Ocean to Western Pacific: Australia and where records from Papua New Guinea need to be confirmed. Source: www.gbif.org
Eastern Indian Ocean to Western Pacific: Australia and where records from Papua New Guinea need to be confirmed. Source: www.gbif.org
Remarks
shark-references Species-ID=2649;
shark-references Species-ID=2649;
Parasites (arranged by Jürgen Pollerspöck)
Cestoda
Cestoda
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