YOU SAID:

I like to walk my fish

INTO JAPANESE

私は魚を散歩させるのが好きです

BACK INTO ENGLISH

I like to walk the fish

INTO JAPANESE

私は魚と歩くのが好きです

BACK INTO ENGLISH

I like walking with fish

INTO JAPANESE

魚と一緒に歩くのが好きです

BACK INTO ENGLISH

I like walking with fish