Do fishers kill for no reason or do they to eat?

Fish do not kill for no reason. They only kill to eat. Fish are predators and they must kill other animals to survive. Some fish, such as sharks, are apex predators and they are at the top of the food chain. This means that they have no predators and they can kill other animals without fear of being eaten themselves. Other fish, such as tuna, are not apex predators and they must be careful when hunting for food. If a fish is not careful, it may be eaten by another fish.