Thematic Bible: Distinction between clean, and unclean

"You may eat anything that lives in the water that is, you may eat anything that has fins and scales either from the seas or from the rivers. But anything that doesn't have fins or scales whether from the seas or the rivers any of the swarming creatures and living creatures in the waters are detestable for you. They are to remain detestable for you. You are not to eat of their meat and you are to detest their carcasses. read more.
Anything that doesn't have fins or scales in the waters is a detestable thing for you."

"You may choose to eat from these creatures in the water: you may eat anything with fin and scale, but you may not eat anything without fin and scale, since it is unclean to you.