YOU SAID:

If I was clown, you should be a fish.

INTO JAPANESE

私がピエロだったら、あなたは魚でなければなりません。

BACK INTO ENGLISH

If I were a clown, you must be a fish.

INTO JAPANESE

私がピエロだったら、あなたは魚に違いない。

BACK INTO ENGLISH

If I were a clown, you must be a fish.