Deuteronomy 14:10
but whatever does not have fins and scales you may not eat; it is ritually impure to you.
Treasury of Scripture Knowledge
Summary
And whatsoever hath not fins and scales ye may not eat; it is unclean unto you.
General references
Bible References
General references
Leviticus 11:9
"'These you can eat from all creatures that are in the water: Any creatures in the water that have both fins and scales, whether in the seas or in the streams, you may eat.