Kingdom Animalia  
 Phylum Chordata  
 Class Chondrichthyes  
 Order Carcharhiniformes  
 Family Hemigaleidae  
 Genus Hemigaleus  
  Hemigaleus microstoma  Bleeker, 1852 
Provider: Pofeng Lee& Shoou-Jeng Joung 
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Synonyms:Dirrhizodon elongatusHemigaleus machlaniHemipristis pingaliHeterogaleus ghardaqensisNegogaleus brachygnathusNegogaleus macrostomaNegogaleus microstoma  details
Citation: 臺灣魚類誌(沈等, 1993);中國動物誌-圓口綱及軟骨魚綱(朱等, 2001);FAO Species Catalogue, Vol.4 Sharks of the world
Character: A small sized and slender shark species. Body elongate, compressed posteriorly; head depress, flattened below, broader than high, snout broadly rounded. Eyes with nictating eyelids. Gill slits short about 1.3 times horizontal eye length in adults. Mouth very short and arched with teeth not protruding. Upper teeth with distal cusplets but no serrations. Lower teeth shaped like inverted Ys, with short, straight, smooth-edged cusps, without cusplets. Second dorsal fin about 2/3 size of 1st dorsal fin. Second dorsal origin slightly ahead of anal origin. Anal fin smaller than 2nd dorsal fin and without preanal ridges. Tranversely, cresentic precaudal pits present. Colour light grey or bronze with no prominent markings. 
Habitat: This is a small, relatively common inshore species of tropical continental areas. Viviparous species, with a yolk-sac placenta. Number of embryos 4-14 in Australian stock. Maximum size at least 91 cm. 
Distribution: Indo-West Pacific including Southern India, Sri Lanka, Thailand, Singapore, Java, China, Taiwan, Philippines, and Australia. 
Utility: This species were caught in gillnets, bottom trawlers, and probably on line gear. Flesh utilized for human consumption. 
Name Code: 383093
  IUCN Red List:VU A2d+3d+4d     Marine     
Suggested Link    The Fish Database of Taiwan  FishBase  Discover Life  World Register of Marine Species (WoRMS) 
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