Thematic Bible: Distinction between clean, and unclean

"This [is what] you may eat from all that is in the water: You may eat everything in the water that has fins and scales, whether in the seas or streams. But these are to be detestable to you: everything that does not have fins and scales in the seas or streams, among all the swarming things and [other] living creatures in the water. They are to remain detestable to you; you must not eat any of their meat, and you must detest their carcasses. read more.
Everything in the water that does not have fins and scales will be detestable to you.

"You may eat everything from the water that has fins and scales, but you may not eat anything that does not have fins and scales-it is unclean for you.