YOU SAID:

My cat is brown and i does not like fish.

INTO JAPANESE

私の猫は茶色、私は魚を好まない。

BACK INTO ENGLISH

My cat is Brown, I don't like fish.

INTO JAPANESE

私の猫はブラウン、魚好きではないです。

BACK INTO ENGLISH

My cats like fish, Brown is not.

INTO JAPANESE

私の猫は魚が好き、茶色ではないです。

BACK INTO ENGLISH

My cat likes fish, not brown.

INTO JAPANESE

私の猫は魚、ない茶色が好き。

BACK INTO ENGLISH

My cat likes fish, not brown.