Hemigaleus microstoma

BLEEKER, 1852


Sicklefin weasel shark
Classification: Elasmobranchii Carcharhiniformes Hemigaleidae

Reference of the original description
BLEEKER, P. (1852)
Bijdrage tot de kennis der Plagiostomen van den Indischen Archipel. Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wettenschappen, 24 (art. 12): 1–92, Pls. 1–4

Synonyms / new combinations and misspellings
Hemigaleus machlani, Negogaleus microstoma, Neogaleus microstoma

Types
Hemigaleus microstoma
Syntype: BMNH: 1867.11.28.173
Hemigaleus machlani
Holotype: BSMP: 11429;


Description :


Citation: Hemigaleus microstoma BLEEKER, 1852: 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 "Hemigaleus microstoma" to info@shark-references.com

Hemigaleus microstoma BLEEKER, 1852; ZMH 25682; juvenile; Gulf of Thailand near Pak Phanang; 07.12.1993; mature male; 790 mm © Dr. Simon Weigmann, Elasmobranch Research Laboratory, Lüneburg
 source: WEIGMANN, S. (2012): Contribution to the Taxonomy and Distribution of Six Shark Species (Chondrichthyes, Elasmobranchii) from the Gulf of Thailand. ISRN Zoology, vol. 2012, Article ID 860768, 24 pages, doi:10.5402/2012/860768
Common names
spa Comadreja segadora, fra \(T\) Milandre faucille, eng Sicklefin weasel shark, eng Weasel shark

Short Description
Australian specimens with dark-tipped fins; tooth counts 28-34/43-54; total vertebral counts 111 to 118 [20050]. Indonesian, Singapore and Thailand specimens with light-tipped fins; tooth counts 25-32/37-43; total vertebral counts 137 to 150 [20050]. Grey-brown above, lighter below, dorsal fins with white tips and posterior margins, sometimes with spots on sides of body [20050].

Distribution
Indo-West Pacific: southern India and Sri Lanka; China to Indonesia. Recent study confirmed that those found in Australia (and probably Papua New Guinea) is a separate species, Hemigaleus australiensis [3389]. Source: www.gbif.org

Human uses
fisheries: minor commercial; price category: not marketed/unknown; price reliability:

Biology
Viviparous, with a yolk-sac placenta; 4 to 14 fetuses in a litter [20050]; 2-4 pups after a gestation period of ~ 6 months; born at ~ 45-47 cm TL [2539]. Size of full-term fetuses (detached umbilical cords and placentae) ranges from 23.7 to 25.6 cm [517]. Distinct pairing with embrace [17086].

Size / Weight / Age
114 cm TL (male/unsexed; [2539])

Habitat
demersal; marine

Remarks
shark-references Species-ID=2653;

Parasites (arranged by Jürgen Pollerspöck)
Cestoda
  • Didymorhynchus southwelli BEVERIDGE & CAMPBELL, 1988 [7412] [21816]
  • Nybelinia mehlhorni PALM & BEVERIDGE, 2002 [17845] [16112]
  • Paraorygmatobothrium kirstenae RUHNKE, HEALY & SHAPERO, 2006 [7629]
  • Prochristianella aciculata BEVERIDGE & JUSTINE, 2010 [21816]
  • Trigonolobium spinuliferum (SOUTHWELL, 1911) DOLLFUS, 1929 [16252] [16112] [21816]

Copepoda
  • Perissopus dentatus STEENSTRUP & LÜTKEN, 1861 [16569]
  • Pseudopandarus australis CRESSEY & SIMPFENDORFER, 1988 [16579] [25052]