ורדו בדגת הים. אמר רבי חנינא: אם זכה רדו, ואם לאו ירדו. אמר רבי יעקב דכפר חנין: את שהוא בצלמנו כדמותנו, ורדו את שאינו בצלמנו כדמותנו ירדו. רבי יעקב דמן כפר חנן אמר: יבא צלמנו ודמותנו וירדה לשאינו דומה לצלמנו כדמותנו.
and they shall rule over the fish of the sea: Rabbi Chanina said, "if he merits it then [God says] have dominion, while if he does not merit, then [God says] he will be taken down." Rabbi Ya'akov of K'far Chanin said, "If [the human acts] in Our image and likeness [then] 'he will rule,' if [the human acts] not in Our image and likeness [then] 'and he will be taken down.' Rabbi Ya'akov of K'far 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."
וירדו בדגת הים. יש בלשון הזה לשון רדוי ולשון ירידה, זכה רודה בחיות ובבהמות, לא זכה נעשה ירוד לפניהם והחיה מושלת בו:
Heb. וְיִרְדּוּ This expression contains both the meaning of ruling and the meaning of subservience. If he merits, he rules over the beasts and over the cattle. If he does not merit, he becomes subservient to them, and the beast rules over him. — [from Gen. Rabbah 8:12]
(28) And God blessed them; and God said unto them: ‘Be fruitful, and multiply, and replenish the earth, and subdue it; and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that creepeth upon the earth.’
וכבשוה - נתן להם כח וממשלה בארץ לעשות כרצונם בבהמות ובשרצים וכל זוחלי עפר ולבנות ולעקור נטוע ומהרריה לחצוב נחשת וכיוצא בזה וזה יכלול מה שאמר "וּבְכָל הָאָרֶץ" (לעיל פסוק כו)
"And subdue it:" He gave them the power and rulership over the earth; to do whatever they wanted with the beasts and the swarming animals and all of those that slither on the ground; and to build and to uproot and plant and to quarry copper from its hills and [to do things] similar to this. And this is [all] included in its stating (above, verse 26), "and over all the earth."
(19) When thou shalt besiege a city a long time, in making war against it to take it, thou shalt not destroy the trees thereof by wielding an axe against them; for thou mayest eat of them, but thou shalt not cut them down; for is the tree of the field man, that it should be besieged of thee? (20) Only the trees of which thou knowest that they are not trees for food, them thou mayest destroy and cut down, that thou mayest build bulwarks against the city that maketh war with thee, until it fall.