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...It is a fish that is loved as a lucky fish, and in the past it was often served with the head and tail attached, and was especially indispensable for the meal of the first meal of a new year, as it was believed to bring about rapid success in life. The adjective "inase" comes from the hairstyle of a flat topknot called "inase-mage" (a topknot with a flattened topknot like the back of a grizzly fish), which was worn by stylish and chivalrous young men at fish markets in the Edo period. It is a fish that is distributed very widely from temperate to tropical regions around the world, and can be found along the coasts of various parts of Japan, including Hokkaido. ...

*Some of the terminology explanations that mention "Inase" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…縁起のよい魚として親しまれ，昔は尾頭付きの膳に出されることが多く，とくに，〈お食い初め〉の膳にはとんとん拍子に出世するということで欠かせないものであった。また〈いなせ〉という形容詞は，鯔背髷（いなせまげ）というまげをイナの背のように平たくつぶした髪形を，江戸時代に魚河岸の粋で俠気ある若者が結ったところからきている。　世界の温帯から熱帯にかけて非常に広い分布をもつ魚で，日本も北海道まで各地沿岸に見られる。…

※「いなせ」について言及している用語解説の一部を掲載しています。

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