YOU SAID:

there is a fish in my potatoes

INTO JAPANESE

私のジャガイモを魚があります。

BACK INTO ENGLISH

My potatoes, fish.

INTO JAPANESE

私はポテト、魚。

BACK INTO ENGLISH

I'm a potato and fish.

INTO JAPANESE

ポテトと魚です。

BACK INTO ENGLISH

Is potato and fish.

INTO JAPANESE

ポテトや魚です。

BACK INTO ENGLISH

Is the fish and potatoes.

INTO JAPANESE

魚とジャガイモです。

BACK INTO ENGLISH

Is the fish and potatoes.