10 But anything that does not have fins and scales you may not eat; for you it is unclean.

Read Deuteronomy 14:10 Using Other Translations

And whatsoever hath not fins and scales ye may not eat; it is unclean unto you.
And whatever does not have fins and scales you shall not eat; it is unclean for you.
You may not, however, eat marine animals that do not have both fins and scales. They are ceremonially unclean for you.