King Solomon built a pool of water at the Temple, representing the sea of Torah. Rabbi Akiva likened the Jewish people to fish swimming in the sea of Torah. There is an intrinsic link between fish and the essence of the Torah, which specifies fins for the sole purpose of enhancing and beautifying itself.
Nachmanides points out that fish with fins and scales usually swim close to the surface of the water, thus experiencing air and water simultaneously. This is what makes them kosher. Fish that do not have fins and scales live closer to the seabed, and are more liable to illness, rendering them unfit to eat both physically and spiritually...
Rav Yitzchak Ginsburg shlit"a : Cont'd
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