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- Fins and Scales 3 answers
According to the Mishna (Niddah 6:9), any fish that has scales also has a fin, but not all fish that have fins also have scales (כל שיש לו קשקשת יש לו סנפיר ויש שיש לו סנפיר ואין לו קשקשת). If that is so, why does the Torah need to tell us that fish require both scales and a fin (Leviticus 11:9-12)? Why not just tell us that they only require scales?