Leviticus 11:9-12

⁹These may ye eat of all that are in the waters: whatsoever hath fins and scales in the waters, in the seas, and in the rivers, that may ye eat. ¹⁰And all that have not fins and scales in the seas, and in the rivers, of all that move in the waters, and of all the living creatures that are in the waters, they are an abomination unto you, ¹¹and they shall be an abomination unto you; ye shall not eat of their flesh, and their carcasses ye shall have in abomination. ¹²Whatsoever hath no fins nor scales in the waters, that is an abomination unto you.