On the other hand, in Judaism and Islam, there is a rule that says 'do not eat fish without scales,' and therefore, until recently, it was considered a taboo to eat eels whose scales are not conspicuous.
一方、ユダヤやイスラームでは「鱗の無い魚は食べてはいけない」という戒律から、近年まで鱗が目立たない鰻を食べることはタブーとされていた。