Cockroach - Cockroach

…Their backs are blue, their abdomens silvery white, and a wide yellow vertical stripe runs from the snout to the tail. They are distinguished into two groups: the shallow-dwelling group, called "Kiburi," which has a large head, thin fish with a prominent yellow stripe on the lateral line, and the migratory group, called "Aoburi," which is often obese and has a dark blue back. They move at a fast speed during migration, averaging 0.5 knots per hour according to the results of tagging and release, and can reach speeds of up to 1 knot at times. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…背は青色，腹部は銀白色で，吻端（ふんたん）から尾にかけて幅広い黄色の1縦帯が通る。頭が大きく，やせて側線部の黄帯が目だちキブリと呼ばれる瀬付き群と，よく肥満し背の青色の濃いアオブリと呼ばれる回遊群とが区別される。回遊の際の移動速度は速く，標識放流の結果から平均毎時0.5ノット，速いときには1ノットくらい出す。…

※「キブリ」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