Etsu (Japanese tapertail anchovy) - Etsu (English spelling)

Japanese: エツ(鱭) - エツ（英語表記）Japanese tapertailanchovy

A fish of the genus Grenatfish in the family Engraulidae of the order Clupeidae. Its body is significantly compressed laterally, and its height gradually decreases toward the tail, with the base of the anal fin being so long that it appears to be connected to the caudal fin. Only the six soft rays at the top of the pectoral fin extend long and thread-like. The front end of the head is rounded, and the bones that form the upper jaw extend long behind the gill cover. The body is silvery white, and its scales are large and easily peeled off. It can grow to a length of over 20 cm. In Japan, it only lives in the inner Ariake Sea, and is mainly distributed in the Chikugo River and Yabe River, but the same genus is also distributed on the Korean Peninsula and in China.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

ニシン目カタクチイワシ科エツ属の魚。体は著しく側扁し尾部にいくにつれ体高が漸減し，しりびれの基底がはなはだしく長く尾びれと連なるように見える。胸びれ上部の6軟条だけが糸状に長くのびている。頭の前端部はまるみを帯び，上あごを形づくる骨がえらぶたの後方まで長くのびている。体は銀白色でうろこは大型ではがれやすい。体長20cm以上になる。日本では有明海奥部だけに生息し，筑後川，矢部川におもに分布するが，朝鮮半島や中国にも同属が分布する。

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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