Midrash Genesis Rabba (Vilna edition), 8:12

"And they shall rule over the fish of the sea" (Genesis 1:26): Rabbi Chanina said, “if he merits it then [G-d says] have dominion, while if he does not merit, then [G-d says] he will be taken down.” Rabbi Yaakov of Kfar Chanin said, "If he [the human acts] in Our image and likeness [then] 'he will rule,' if he [acts] not in Our image and likeness, then 'and he will be taken down.' Rabbi Yaakov of Kfar Chanin said [further]: “the [righteous person] who is in Our image and likeness will come, and rule over [wicked people and animals] who are not in Our image and likeness." [translation by Rabbi Yonatan Neril, adapted in part from that of Isaac Levy to Rabbi Samphson Raphael Hirsch, The Pentateuch to Genesis 1:26 (citation below) and Soncino Midrash Rabbah]