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Nachmanides believed that the restrictions against certain fish also addressed health concerns, arguing that fish with fins and scales (and hence ritually clean) typically live in shallower waters than those without fins or scales (i.e., those that were ritually impure), and consequently the latter were much colder and more humid, qualities he ...
All true fish with scales have fins, but the converse is not true. All fish in this article have true (visible) fish scales, an endoskeleton, fins, and gills (as opposed to lungs). The requirement for gills is not part of any religious rule, but biologically it is an identifying characteristic of true fish. Any animal lacking any of the latter ...
The Jewish laws of kashrut, which only permit the consumption of fish with both scales and fins, forbids sturgeon, as they have ganoid scales instead of the permitted ctenoid and cycloid scales. While all Orthodox groups forbid the consumption of sturgeon, some Conservative groups do allow it. [ 68 ]
The following year, Rabbi Yosef Kanowitz published the same list of kosher fish with swordfish still included. Swordfish was widely considered kosher by halakhic authorities until the 1950s. Orthodox opinion began to shift in 1951, when Rabbi Moshe Tendler examined swordfish and decided it was not kosher due to the lack of scales. Tendler's ...
Uneven black spots cover its head, body, and fins. [42] [43] Green-brown scales run along the back of its body, and the scales on its underbelly are white or yellow. [42] [45] This coloration, which blends well with the gar's surroundings, allows it to ambush its prey. [42] [45] The Florida gar has no ganoid scales on its throat. [42]
Their paired fins are in the thoracic position and their caudal fin is truncated, which means squared off at the corners, a characteristic of the family Percidae. Another physical characteristic of saugers is their ctenoid scales, which are common in advanced fishes. Saugers have a fusiform body structure, and as a result are well adapted ...
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The biblical fish category includes marine mammals. ("Even the sea monsters draw out the breast, they give suck to their young ones..." Lamentations 4:3 A.V. & D.V.) Jonah's fish: According to the Book of Jonah, a "great fish" swallowed the prophet Jonah (Jonah 1:17 A.V.), and he was in its belly for three days, before being vomited up.