Why Swordfish is Unclean
The juvenile swordfish has scales,
although the adult does not. Is this
fish clean or unclean?
"This reply is based on several sources in halacha [the entire body of
Jewish law and tradition, including the laws of the Bible, Talmud and oral
law]. Most notably, extensive research by Rabbi Moshe Tendler, Chairman and
Professor of the Biology Department at Yeshiva University, March, 1966.
"The halachic [status] of swordfish (xiphias gladius): it is a non-kosher
fish. It has been presented to halachic giants of our generation such as
Rabbi Moshe Feinstein and from previous generations such as Rabbi Itzel of
Ponovitz, and they have all concluded that it is not kosher.
"The biblical term for scaled kosher fish is 'kaskeses.' Nachmanides
comments in Leviticus XI:9 that based on Biblical and Talmudic sources this
refers to a type of structure like the nail of a human which can be removed
from the skin of the fish by hand or with a knife. But if it be affixed to the
skin and not separated therefrom at all (i.e. no free margins), then the bearer
of these 'scales' may not be eaten.
"Ichthyologists recognize four types of fish scale. The kosher variety of
scales are cycloid (round) and ctenoid (comblike). The ganoid scale found on
sturgeon, or the placoid scale of the shark are specifically excluded from the
Biblical term kaskeses since they are not 'removable' scales without tearing
the skin from the flesh. Even an educated layman would not see any similarity
between the heavy bony plates of the sturgeon or the needle-like projections on
the shark skin and the classic kosher scale of the whitefish or carp.
"In Fishery leaflet #531, U.S. Dept. of Interior, Fish & Wildlife
Service, Bureau of Commercial Fisheries, Wash. D.C., it states 'swordfish
during early juvenile stage of life (up to 8 inches long), have
"scales" that are markedly specialized and rather unique. They are in
the form of bony tubercules or expanded compressed platelike bodies. These
scales are rough, having spinous projections at the surface and they do not
overlap one another as the scales in most fish do. With growth the scales
disappear and the adult fish including those sold commercially have no scales.'
"The Talmud (Chulin 66A) lists but two exceptions to the absolute
requirements of having visible scales:
a) fish that shed their scales when netted, like the mackerel. A black cloth
placed in the net beforehand can verify this;
b) fish that have scales developing later in the life cycle; consequently the
juvenile fish that lack scales may be eaten since they DO have scales at
maturity.
"Nowhere in the Talmud or in responsa literature is there any reference or
precedent to such a deviant: a fish that has scales as a juvenile but not as an
adult. Therefore, based on the above, swordfish (xiphias gladius) do not
possess scales of the kosher variety and is a non-kosher fish" (www.koshersupermarket.com/rabbidavis.htm).
Because of the scientific evidence listed here, we've listed the swordfish with
other unclean animals.
Based on an article by Cecil E. Maranville, from the www.ucg.org website.