YOU SAID:

your going to be swimming with the fishes

INTO JAPANESE

あなたは魚と一緒に泳ぐつもりです

BACK INTO ENGLISH

You're going to swim with the fish.

INTO JAPANESE

あなたは魚と一緒に泳ぐつもりです。

BACK INTO ENGLISH

You are going to swim with fish.

INTO JAPANESE

あなたは魚と一緒に泳ぐつもりです。

BACK INTO ENGLISH

You are going to swim with fish.