Leviticus 11:10
And all that have not fins and scales in the seas, and in the rivers, of all that move in the waters, and of any living thing which is in the waters, they shall be an abomination unto you:
Cross-reference
Deuteronomy 14:3
Parallel
Deuteronomy 14:3 directly reiterates the command not to eat abominable things — same dietary law context.