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A sawshark or saw shark is a member of a shark order (Pristiophoriformes ) bearing a unique long, saw-like rostrum (snout or bill) edged with sharp teeth, which they use to slash and disable their prey. There are ten species within the Pristiophoriformes, the longnose or common sawshark (Pristiophorus cirratus), shortnose sawshark (Pristiophorus nudipinnis), Japanese sawshark (Pristiophorus japonicas), Bahamas sawshark (Pristiophorus schroederi), Warren's sixgill sawshark (Pliotrema warreni), Anna's sixgill sawshark (Pliotrema annae), Kaja's sixgill sawshark (Pliotrema kajae), African dwarf sa

Species

saw sharks

FAMILY

KingdomAnimalia
PhylumChordata
ClassElasmobranchii
OrderPristiophoriformes
FamilyPristiophoridae

Habitatmarine

Observations recorded4,912

鋸鯊，即锯鲨目的鯊魚，属于板鳃类，其下只有一科。锯鲨的吻突出成一长板，两侧有尖锐的齿，用以攻击猎物，类似锯，板中央有两条肉质触须，以探测猎物。一般生活在海底40米处，以底栖生物和鱼为食物，分布在从南非到日本的广大海域，1960年在加勒比海640至915米深的海底发现了巴哈马锯鲨，是一个新的品种。锯鲨的肉可以食用，日本人尤其喜好食用锯鲨。六鳃锯鲨属具有六个鳃裂，其他种类和普通鲨鱼一样，只具有五个鳃裂。分類锯鲨科其下分成2屬共9種[3][4]：六鳃锯鲨属六鳃锯鲨（Pliotrema warreni）：又稱瓦氏六鳃锯鲨。锯鲨属长吻锯鲨（Pristiophorus cirratus）Latham, 1794 日本锯鲨（Pristiophorus japonicus）Günther, 1870 短吻锯鲨（Pristiophorus nudipinnis）Günther, 1870 巴哈马锯鲨（Pristiophorus schroederi）S. Springer & Bullis, 1960 热带锯鲨（Pristiophorus delicatus）Yearsley, Last & W. T. White, 2008 非洲侏儒锯鲨（Pristiophorus nancyae）Ebert & Cailliet, 2011 [5] 拉氏鋸鯊（英语：Pristiophorus lanae）（Pristiophorus lanae）Ebert & Wilms, 2013 [4] 東澳鋸鯊（英语：Pristiophorus peroniensis）（Pristiophorus peroniensis）Yearsley, Last & W. T. White, 2008 參考文獻 ^ "Pristiophoriformes". FishBase. Ed. Ranier Froese and Daniel Pauly. January 2009 version. N.p.: FishBase, 2009. ^ "Pristiophoridae". FishBase. Ed. Ranier Froese and Daniel Pauly. October 2013 version. N.p.: FishBase, 2013. ^ Froese, Rainer, and Daniel Pauly, eds. (2013). Species of Pristiophorus in FishBase. 2013年October月版本. ^ 4.0 4.1 Ebert, D.A. & Wilms, H.A. (2013): Pristiophorus lanae sp. nov., a new sawshark species