Deuteronomy 14:10 KJV

And whatsoever hath not fins and scales ye may not eat; it is unclean unto you.
Deuteronomy 14:10, King James Version

In context

9 These ye shall eat of all that are in the waters: all that have fins and scales shall ye eat:

10 And whatsoever hath not fins and scales ye may not eat; it is unclean unto you.

11 Of all clean birds ye shall eat.