YOU SAID:

Well that’s a whole other kettle of fish.

INTO JAPANESE

まあ、それは魚の全く別のやかんです。

BACK INTO ENGLISH

Well, that's a completely different kind of fish.

INTO JAPANESE

まあ、それはまったく異なる種類の魚です。

BACK INTO ENGLISH

Well, it is a completely different kind of fish.

INTO JAPANESE

まあ、それは魚の全く異なる種類です。

BACK INTO ENGLISH

Well, it is a completely different kind of fish.