Tuna belongs to a group of marine fish that feed on some of the marine life around them. Tuna mainly eat animals, specifically, there are many kinds of tuna. It is common for some fish to be smaller than them, such as eels. The other is shrimp, crab and other food with shells. In addition, squid can also become their food, overall, its feeding habits are relatively complex. If you raise tuna in captivity, you can feed them mainly fish and shrimp.
Because the gills of tuna are degraded, they can only get oxygen by swimming constantly to allow the surrounding water to flow through their gills. Therefore, if they keep swimming, they will always consume their physical strength, and they need to eat a lot to supplement this part of the energy consumed. Then, the tuna will eat a relatively large amount. Generally speaking, they can eat about 18% of their body weight at a time.
The above has been introduced, tuna can fish, shrimp, crab and so on as food. Tuna living in the ocean need to catch their own prey, and their ability to catch prey is very strong. In fact, the swimming speed of tuna itself is very fast, even sometimes 160 kilometers per hour, the average speed is 60-80 kilometers per hour. When tuna hunt, they use their speed to chase their prey, and generally speaking, many fish can't escape the pursuit of tuna. Tuna sometimes swallow them directly, and sometimes stab their prey with their sharp mouths before eating them.
