Kingdom Animalia  
 Phylum Chordata  
 Class Chondrichthyes  
 Order Carcharhiniformes  
 Family Sphyrnidae  
 Genus Sphyrna  
  Sphyrna mokarran  (Rüppell, 1837) 
Provider: Pofeng Lee& Shoou-Jeng Joung 
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Synonyms:Sphyrna ligoSphyrna mokorranSphyrna tudesZygaena dissimilisZygaena mokarranZygaena tudes  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 large hammerhead with an expanded prebranchial head. Head width 23-27% of total length. Anterior margin of head very broadly arched in young but nearly straight in adults, with prominent medial and lateral indentations. Preoral snout less than 1/3 of head width. Anterior teeth moderately long stout cusps, strongly serrated edges, posterior teeth mostly cuspidate and not keeled and molariform. First dorsal fin origin over or slightly behind pectoral insertions, its free rear tip well anterior to pelvic origins. Second dorsal fin height about equal to anal fin, its inner margin about equal to fin height. Anal fin about as large as or larger than 2nd dorsal fin, its base 5.6-7.3% of total length. Total vertebral centra 197-212. Colour grey-brown above, light below, without fin markings. 
Habitat: A coastal-pelagic and semi-oceanic tropical hammerhead. Viviparous, with a yolk-sac placenta. Litter size 13-42. Sex ration of embryos are 1:1. Gestation period estimated to be at least 7 months. Maximum size 550-610 cm. males maturing at 234-269 cm and f 
Distribution: Western Atlantic from North Carolina to Brazil, including Gulf of Mexico and Caribbean. Eastern North Atlantic including Morocco, Senegal. Mediterranean. Indo-West Pacific from South Africa and Red Sea to India, Thailand, China, Taiwan, Riu Kyu Islands, A 
Name Code: 383089
      IUCN Red List:CR A2bd     Marine     
Suggested Link    The Fish Database of Taiwan  FishBase  Discover Life  World Register of Marine Species (WoRMS) 
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