Kingdom Animalia  
 Phylum Chordata  
 Class Chondrichthyes  
 Order Carcharhiniformes  
 Family Carcharhinidae  
 Genus Rhizoprionodon  
  Rhizoprionodon acutus  (Rüppell, 1837) 
Provider: Pofeng Lee& Shoou-Jeng Joung 
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Synonyms:Carcharhinus acutusCarcharias aaronisCarcharias acutusCarcharias crenidensCarcharias eumecesCarcharias walbeehmiCarcharias walbeehmiiCarcharias walbeniiCynocephalus acutusHypoprion acutusScoliodon acutus 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: Prenarial snout length 4-5.4% of total length. Teeth not well-differentiated between sexes. Total tooth rows usually 25/24. Position of 1st dorsal origin usually over or slightly in front of pectoral free rear tips. Second dorsal origin ranges from above last third of anal base to over its insertion. Length of pectoral anterior margin usually equal to or shorter than 1st dorsal length from origin to free rear tip. Total number of vertebral centra 121-162, precaudal centra 55-79. Colour grey, grey-brown or purplish brown above, pale below, pectoral fins with a light margin. 
Habitat: An abundant inshore and offshore shark of continental shelves, at depth of a metre or less down to about 200 m. Viviparous, with a yolk-sac placenta. Litter size 1-8. Gestation period estimated to be about a year. Maximum size 178 cm, but most adults smal 
Distribution: Eastern Atlantic from Madeira and Mauritania to Angola. Indo-West Pacific from South Africa and Red Sea to Pakistan, India,Malaysia, Indonesia, Thailand, China, Taiwan, Japan, the Philippines, Australia. 
Utility: This is one of the most abundant species. It is caught with longline, hook-and-line, bottom trawls, and probably other gear. It utilized fresh and possibly dried salted for food and for fishmeal. 
Name Code: 383086
  IUCN Red List:LC      Marine     
Suggested Link    The Fish Database of Taiwan  FishBase  Discover Life  World Register of Marine Species (WoRMS) 
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