'Fins' in the Bible

"'These you may eat of all that are in the waters: whatever has fins and scales in the waters, in the seas, and in the rivers, that you may eat.

All that don't have fins and scales in the seas, and in the rivers, of all that move in the waters, and of all the living creatures that are in the waters, they are an abomination to you,

Whatever has no fins nor scales in the waters, that is an abomination to you.