YOU SAID:

yesterday i walked my fish

INTO JAPANESE

昨日私は魚を散歩させました

BACK INTO ENGLISH

Yesterday I walked the fish

INTO JAPANESE

昨日は魚の散歩をしました

BACK INTO ENGLISH

I went for a fish walk yesterday

INTO JAPANESE

昨日は魚散歩に行ってきました

BACK INTO ENGLISH

I went fishing yesterday

INTO JAPANESE

昨日は釣りに行きました

BACK INTO ENGLISH

yesterday i went fishing

INTO JAPANESE

昨日私は釣りに行きました

BACK INTO ENGLISH

yesterday i went fishing