YOU SAID:

fish don't swim above water

INTO JAPANESE

魚が水の上に泳いではいけません

BACK INTO ENGLISH

Fish should not swim over the water

INTO JAPANESE

魚は水上で泳ぐべきではありません

BACK INTO ENGLISH

Fish should not swim on the water

INTO JAPANESE

魚は水上で泳ぐべきではありません

BACK INTO ENGLISH

Fish should not swim on the water