Leviticus 11:9-12

“Among the creatures that live in the water of the seas and streams, you may eat any that have fins and scales. But anything that doesn’t have fins and scales, whether in seas or streams, whether small creatures in the shallows or huge creatures in the deeps, you are to detest. Yes, detest them. Don’t eat their meat; detest their carcasses. Anything living in the water that doesn’t have fins and scales is detestable to you.