My boat is equipped with the latest fishfinder.

He found a way to profit from a difficult situation like fishing at the bottom of a river.

The Japanese Society for Rights of Authors, Composers and Publishers is an organization that protects the copyrights of musicians.

He was swimming freely as if he was a fish playing in the pot.

He is a person who follows his own path, and the phrase 'a big fish does not swim into a small stream' fits him perfectly.