I once heard that if a fish has fins it's enough - and you don't need to find out if it had scales. Is this true? What is the source? Why did the Torah write fins and scales, if fins is enough of an ...
Is there a Chiuv to eat fish at all three meals on Shabbos?
There is a story in the Gemarah I wont get into the Detail but here is the relevant part of the story. The wife buys a fish and finds a diamond inside are they not responsible to return it to the Fish ...