Leviticus 11:10-12

Complete Jewish Bible

¹⁰ But everything in the seas and rivers without both fins and scales, of all the small water-creatures and of all the living creatures in the water, is a detestable thing for you. ¹¹ Yes, these will be detestable for you — you are not to eat their meat, and you are to detest their carcasses. ¹² Whatever lacks fins and scales in the water is a detestable thing for you.