YOU SAID:

A fish haa to do what a fish to do has

INTO JAPANESE

魚がやるべきことをする魚は

BACK INTO ENGLISH

Fish that do what fish should do

INTO JAPANESE

魚がすべきことをする魚

BACK INTO ENGLISH

Fish that fish should do

INTO JAPANESE

魚がすべき魚

BACK INTO ENGLISH

Fish that should be fish

INTO JAPANESE

魚であるべき魚

BACK INTO ENGLISH

Fish that should be fish