Wednesday, September 9, 2020

Are tuna Omnivores?

Tunas are one of the fish species with the highest consumption. There are eight tuna species. Both tuna species are nomadic, meaning they don't spend the whole of their lives in one place. Instead, they also alter their position. Tunas are typically present in the subtropical and temperate waters of the Atlantic, Mediterranean, and Black Seas. Tunas, especially in Japan and Australia, are over-fished in various parts of the world. As a result, the number of tunas since the beginning of the 20th century has decreased by over 90 percent. While tunas are listed as endangered, they are persistently hunted by fishermen around the world.

Tuna is a sizeable fish. It can reach up to 6.5 feet in length and up to 550 pounds in weight. The largest (ever recorded) specimen of Tuna, weighing 1600 pounds, was 21 feet long. In the water, the color of the body offers excellent camouflage. The dorsal (back) side of the tuna body is dark blue, and when seen from the air, it blends with the ocean floor. The tuna belly is silver-white, and when viewed from below, it blends with the surface of the water.

Though tall, tunas are very fast swimmers. They can hit speeds of 44 to 62 miles an hour. To minimize drag and speed up the swimming speed, Tuna is able to adjust the position of its dorsal and pectoral fins.

Are tuna Omnivores?

Tuna can swim near the surface or, when looking for food, can dive to the depth of 3000 feet. Tuna is a fucking carnivore. It feeds on various types of fish, squids, and crustaceans (mackerel, herring, hake).

Unlike other fish, Tuna is capable of growing and retaining the temperature of the body a few degrees above the surrounding water temperature. Because of this trait, it is possible to identify Tuna as a warm-blooded fish.

Tuna has a specific network of small arteries and veins near the so-called "rete mirabile" muscles, which promotes blood heating. Warmed blood is important for swimming fast and strong.

Tuna breathes oxygen from the water and has to continuously swim because of that. In a brief period of time, Tunas can cover wide distances. It can cross the whole Atlantic in 30 days, traveling 16 miles per hour.

Natural tuna predators are orcas and sharks, in addition to humans. Tunas matting season depends on where they are based. Tunas are mated in the Gulf of Mexico from mid-April to mid-June. Mating takes place in the Adriatic Sea and the Mediterranean Sea from June to August.

One female will release 30 million eggs during the spawning process. Just two of those thirty million would live to adulthood. Other marine species will eat the remaining larvae. The mean life span of Tuna in the wild is between 15 and 30 years. Until this time, a small percentage of Tuna managed to survive.