Vocabulary
水を得た魚
みずをえたうお
someone who is in their element; fish that has found water
expression
noun
Example sentences
畑仕事（はたしごと）をしているとき彼（かれ）はまるで水（みず）を得（え）た魚（さかな）のようだ。
He's in his element when working on the farm.