Fishing
If a fish that has scales is taken out of the water alive, and it dies outside the water, then it is Tahir, and Halal to eat. However, if it dies inside the water, then although the body is Tahir, it is Haram to eat.
As for the fish that does not have scales, even if it is taken out of the water alive and then it dies, it is still Haram to eat.
It is not necessary that...