noun
pilot fish
A marine fish (Naucrates ductor) often seen swimming near sharks, ships, or large marine animals. The Japanese name literally means 'false yellowtail'.
ブリモドキはサメの近くを泳ぐことで知られている。
Pilot fish are known for swimming near sharks.
船のそばにブリモドキの群れが見えた。
We saw a school of pilot fish near the boat.
ブリ (yellowtail) is a different, commercially important fish. ブリモドキ is named for a superficial resemblance but is not closely related.
Compound of ブリ (yellowtail) + もどき (pseudo-, imitation). The name reflects a perceived resemblance to yellowtail, though the two are not closely related.