Pacific jack mackerel

Japanese: カイワリ - かいわり
Pacific jack mackerel

A marine fish belonging to the order Perciformes and family Carangidae of the class Osteichthyes. It is widely distributed on the Pacific coast from Mt. Kinka, and on the Sea of ​​Japan coast from various parts of Japan south of the Noto Peninsula to the Ryukyu Islands, Taiwan, the waters of Java, and the waters of South Africa. It can reach a total length of 40 cm, but most are around 20 cm. The body is tall and significantly laterally compressed. There are two free spines in front of the anal fin. The lateral line is strongly curved, but runs straight from below the 15th and 16th soft rays of the second dorsal fin to the rear. The ridge scales are relatively small and develop along the entire length of the straight part of the lateral line. The teeth on both the upper and lower jaws are villous. The main external feature is a wide black-brown vertical band on the second dorsal fin and anal fin. Juveniles have six black horizontal stripes on their sides, but as they grow, these become less clear. This bottom-dwelling fish is often caught with bottom trawls. In the Bungo Channel and Hyuga Nada Sea areas, the spawning season is from September to November, when they lay pelagic eggs. The meat is delicious, and can be eaten as sashimi or teriyaki.

[Kiyoshi Suzuki]

Major species of horse mackerel [specimen illustration]
© Tadaaki Ohkata ">

Major species of horse mackerel [specimen illustration]


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

硬骨魚綱スズキ目アジ科に属する海水魚。太平洋側では金華山、日本海側では能登(のと)半島以南の日本各地から南西諸島、台湾、ジャワ島海域、南アフリカ海域にかけて広く分布する。全長40センチメートルに達するが、普通は20センチメートルぐらいのものが多い。体は高く、著しく側扁(そくへん)する。臀(しり)びれの前方に2本の遊離した棘(とげ)がある。側線は強く湾曲するが、第2背びれの第15、16軟条下から後部は直走する。稜鱗(りょうりん)(ぜんご)は比較的小さく、側線の直走部の全長にわたって発達する。上下両顎(りょうがく)の歯はともに絨毛(じゅうもう)状。第2背びれと臀びれに、幅の広い黒褐色縦帯があることが外観上の大きな特徴である。幼魚では体側に6条の黒色横帯があるが、成長するにつれて不鮮明になる。底生性の魚で、底引網でよく漁獲される。豊後(ぶんご)水道や日向灘(ひゅうがなだ)などの海域では、産卵期は9~11月で、浮性卵を産む。肉は美味で、刺身、照焼きなどにする。

[鈴木 清]

アジのおもな種類〔標本画〕
©大片忠明">

アジのおもな種類〔標本画〕


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