Leviticus 11:9-12

9“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.

10But these are to be abhorrent to you: everything in the seas or streams that does not have fins and scales among all the swarming things and other living creatures in the water.

11They are to remain abhorrent to you; you must not eat any of their meat, and you must abhor their carcasses.

12Everything in the water that does not have fins and scales will be abhorrent to you.