Lamna ditropis (Lamna ditropis)

Japanese: ネズミザメ(鼠鮫) - ネズミザメ（英語表記）Lamna ditropis

A marine fish of the family Lamniformes in the order Lamniformes. Its name comes from its round eyes and face that resembles a mouse. It is also known as the camel shark. In the Tohoku region, it is more commonly known as Mouka, a corrupted version of Mafuka (true shark). Its English name is porbeagle, a compound word of porpoise (dolphin) and beagle (beagle dog). It is also called salmon shark. The closely related porbeagle is found in the North and South Atlantic and the Indian Ocean, but this species is limited to its distribution in the North Pacific Ocean from the waters off Japan in the west to the Aleut Islands, and from California to Alaska in the east.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

ネズミザメ目ネズミザメ科の海産魚。名は眼が丸く顔つきがネズミに似ていることに由来する。別名ラクダザメ。東北地方ではマフカ(真鱶)がなまったといわれるモウカのほうが通りがよい。英名はporbeagleで，porpoise(イルカ)とbeagle(ビーグル犬)の合成語とされる。salmon sharkともいう。近縁種のニシネズミザメは南北大西洋やインド洋に分布するが，本種は西は日本近海からアレウト列島，東はカリフォルニアからアラスカまでの北太平洋域に分布が限定される。

出典　株式会社平凡社世界大百科事典第２版について　情報

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