Tuna is also called tuna, tuna, etc. Different countries and regions have different names for tuna. tuna, for example, is literally translated from English, because tuna is called "tuna" in English, and tuna is directly transliterated into Chinese, so tuna is also called tuna. Tuna is the exclusive name for tuna in Japan, and tuna is also recorded in ancient books in China, but the fish referred to in ancient books is not tuna. In addition, different countries and regions have different names for tuna. It's just that tuna is relatively common. What are the characteristics of tuna Tuna is a kind of fish living in the ocean, and its biggest characteristic is its fast swimming speed. And tuna live in a wide range, and they can even cross an ocean. Tuna can swim at an average speed of 60-80 kilometers per hour, and the fastest time can reach 160 kilometers per hour. In addition, the gills of tuna have degenerated, so they need to swim all the time to keep the water flowing through the gills and ensure that they have enough oxygen.
Tuna is relatively large, yellowfin tuna is generally about 2 meters long, bluefin tuna is even larger, and its body length will be about 3-4 meters in adulthood. They are not only large in size, but also long in life. Under normal circumstances, the life span of tuna can reach about 40 years.
