Leviticus 11:11

They shall be even an abomination to you
This is repeated again and again, to deter from the eating of such fishes, lest there should be any desire after them:

ye shall not eat of their flesh,
here mention is made of the flesh of fishes, as is by the apostle, ( 1 Corinthians 15:39 ) . Aben Ezra observes, that their wise men say, this is according to the usage of words in those ages:

but you shall have their carcasses in abomination;
not only abstain from eating them and touching them, but to express the utmost aversion to them.