more versatility as a survival knife than a serrated edge knife. A serrated edge has benefits, but not enough to warrant having a blade edge that is completely serrated.
Some hunting knives have notches for sharpening, notches to cut cordage and notches for extra grip, while others are simply decorative
The crossbow would be the best for survival for a novice without experience on either weapon. If you are experienced with the bow and crossbow
It is not safe to eat a dead fish. It is highly dangerous, especially in survival-type situations. Dead fish harbor bacteria, parasites, and disease that can make you very sick and even cause death.