Scientific Name	Sphyrna lewini   Pronounce			by: Lab of Fish Ecol. and Evo., BRCAS
Author	(Griffith & Smith, 1834)	Depth	0 - 275M
Chinese	路易氏雙髻鯊	Poisonous Fish	No
Family_Chinese	雙髻鯊科	Economic Fish	Yes
Family	F030　Sphyrnidae	Edible Fish	Yes	Chinese In Mainland China	路氏雙髻鯊
Max Length	430 cm	Aquarium Fish	No	Common Name	路易氏丫髻鯊、紅肉雙髻鮫、犛頭沙、雙髻鯊、雙過仔、槌頭鯊
Distribution in World	global	Distribution in Taiwan	East、West、South、North、North East、Greeb IS.
Habitats	Ocean、Deep Sea、Coral、Benthos、 Estuary、Coastal	Holotype Locality	[South coast of New Holland] southern Australia
Synonyms	Cestracion leeuwenii, Cestracion oceanica, Sphyrna diplana, Sphyrna leweni, Sphyrna mokarran, Sphyrna zygaena, Zygaena erythraea, Zygaena indica, Zygaena lewini, Zygaena malleus
Reference	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  Schwartz, F.J. etc. 1981 Schwartz, F.J. 1983 Compagno, L.J.V. 1984 Compagno, L.J.V. 1984 沈世傑 編 Shih-Chieh Shen ed. 1993 朱元鼎, 孟慶聞 等編 2001
Specimen List	AMNH44041. ASIZP0057911. ASIZP0060422. ASIZP0060542. ASIZP0062898. ASIZP0070802. ASIZP0800971. ASIZP0800972. ASIZP0800973. ASIZP0806220. ASIZP0900133. ASIZP0910971. ASIZP0910972. ASIZP0910973. ASIZP0916220. FRIP01055. FRIP20540. FRIP21066. FRIP21599. NMMBP04210. NMMBP04214. NMNSF00250. NTMP1363. NTUM08225.
Common Name	Southern hammerhead shark; Scalloped hamerhead; Scalloped hammerhead; Scalloped hammerhead shark; Scalloped hammer head; Bronze hammerhead shark; gebuchteter Hammerhai; Hammerhead; Kidney-headed shark; Hammerhead shark
Redlist Status	IUCN Redlist: Critically Endangered(CR)  2018-11-08   CITES Appendix 2
Characteristic	A large hammerhead with an expanded prebranchial head. Head width 24-30% of total length. Anterior margin of head very broadly arched, with prominent medial and lateral indentations. Preoral snout about 1/5-1/3 of head width. Anterior teeth with moderately long, stout to slender cusps, smooth or weakly serrated. Posterior teeth mostly cuspidates and not keeled and molariform. First dorsal origin above or slightly behind pectoral insertions, its free rear tip well anterior to pelvic origins. Second dorsal height less than anal fin, its inner margin length about twice the fin height. Total vertebrae centra 174-209. Colour grey-brown above, white below, with dusky to black pectoral fin tips.
habitats	The most abundant hammerhead, a coastal pelagic, semioceanic warm-temperate and tropical species. This species is apparently highly mobile and in part migratory, and forms huge schools of small migrating individuals that move poleward in the summer in cer
Distribution	Western Atlantic from New Jersey to Brazil, including Gulf of Mexico and Caribbean. Eastern Atlantic from Senegal to Zaire. Indo-West Pacific from South Africa and Red Sea to Pakistan, India, Burma, Thailand, Indonesia, China, Taiwan, Japan, The Philippin
Utility	This species is caught with pelagic longlines, fixed bottom longlines, fixed bottom nets, and even bottom and pelagic trawls. The flesh is utilized fresh, fresh-frozen, dried salted and smoked for human consumption. The fins are used to prepare shark-fin