Why do tuna fish eat smaller fish?

To obtain energy and nutrients. Tuna are carnivores and must eat other animals to survive. Smaller fish are a convenient and abundant food source for tuna.

To avoid competition. Smaller fish are often found in the same areas as tuna. By eating smaller fish, tuna can reduce competition for food and space.

To gain an advantage in hunting. Eating smaller fish can help tuna to develop the skills and techniques they need to hunt larger prey.

To maintain a healthy diet. Tuna need a variety of nutrients to stay healthy. Eating smaller fish can help them to obtain the vitamins, minerals, and proteins they need.

To survive in their environment. Tuna live in a variety of environments, including open ocean, coastal waters, and coral reefs. Eating smaller fish can help tuna to adapt to different environments and find the food they need to survive.