Hemigaleus australiensis  White , Last & Compagno, 2005,

Australian weasel shark
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Hemigaleidae (Weasel sharks)
Etymology: Hemigaleus: Greek, hemis = the half + Greek,galeos = a shark (Ref. 45335);  australiensis: Named for its qeographic range of this species; off tropical Australia..   More on author: Last.

Environment / Climate / Range Ecology

Marine; demersal; depth range 12 - 170 m (Ref. 56150).   Tropical

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 60 - 65 cm
Max length : 110 cm TL male/unsexed; (Ref. 56150)

Short description Morphology | Morphometrics

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 (Ref. 56150).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

Eastern Indian Ocean to Western Pacific: Australia and where records from Papua New Guinea need to be confirmed.

Biology     Glossary (e.g. epibenthic)

A predominantly demersal species on continental and insular shelves from shallow, inshore bays down to 170 meters. Sexual maturity of males reached at about 60 cm TL; females between 60 - 65 cm TL; with young are born at about 30 cm TL (Ref. 56150).

Main reference Upload your references | References | Coordinator | Collaborators

White, W.T., P.R. Last and L.J.V. Compagno, 2005. Description of a new species of weasel shark, Hemigaleus australiensis (Carcharhiniformes: Hemigaleidae) from Australian waters. Zootaxa 1077:37-49.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7539   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00142 - 0.00973), b=3.11 (2.88 - 3.34), based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  4.2   ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years ().
Vulnerability (Ref. 59153):  Moderate to high vulnerability (47 of 100) .
Price category (Ref. 80766):   Unknown.