Is tuna a true fish?



First of all, let's make one thing clear: Tuna is not an ordinary fish. Tuna is a pelagic marine fish that changes its color and size depending on the species. From a taxonomic point of view, tunas are predatory fish that plow through the waters of the ocean and belong to a "tribe" called Thunnini, a subgroup of the mackerel family (Scombridae). The tribe includes the eight "true tunas" of the genus Thunnus (white, red, tongol, yellowfin, blackfin and three species of bluefin) and seven other species of tuna, including skipjack, sand eel, and little tunny. All tunas, from the smallest bullet and Melva species to giant bluefin tuna, have fusiform shaped hydrodynamic bodies with a crescent-shaped caudal fin, two dorsal fins, pectoral fins that can be stored for swimming at high speed and Triangular "aletitas" that extend along the upper and lower sides of the tail. The coloration of the skin varies from one species to another but generally becomes paler from a metallic blue in the upper part to a silvery white below, often with yellow details. By taking a look, we can find one of the most impressive pieces of biological machinery in the entire China Tilapia Production Line Suppliersocean. "When you look at a tuna, you can see an animal that has been created to have a very high performance," said Randy Kochevar, a marine biologist who works with Block at the Hopkins Marine Station at Stanford University. In fact, every aspect of tuna physiology seems to surpass the limits of the physically possible, from very high-efficiency gills to a large heart that can beat up to 200 times per minute. What makes these animals really special is not just their size, speed or strength but the evolutionary adaptations, which were perfected overChina Tilapia Production Line Manufacturers hundreds of millions of years, that allow them to have that incredible performance. It is a very active and voracious fish, whose meat is highly valued for human consumption. They are athletic phenomena of nature, created with pure power, speed, and endurance. They can withstand intense cold, submerge to great depths and swim at speeds close to 80 kilometers (50 miles) per hour. Larger species can reach amazing dimensions: sometimes up to 3 meters (10 feet) or more in length. The world-record Atlantic bluefin tuna, which was fished in Nova Scotia in 1979, weighed 678 kg (1,496 lbs) and ranks first on the list of largest fish caught. "They are on top of the evolution of bony fish: are the" super fish, "said Barbara Block, a marine biologist at Stanford University who is one of the leading experts in yellowfin tuna in the world. Block and The team have tagged and tracked more than 2,000 bluefin tuna from the Atlantic and the Pacific during their careers, and their research has revealed much information about the epic migrations these extraordinary fish carry out, such as bluefin tuna. from the Pacific that swam from California to Japan and back to California (more than 16,000 km [10,000 miles]) in a period of only five months in 2003. Similar to lions and wolves, tunas are among the top predators that travel long distances in search of prey, tend to hunt in groups (banks) and play a key role in regulating the ocean's food chain. While it may seem strange to compare the main ingredients of Fancy Feast with these iconic terrestrial mammals, the comparison is more accurate than one might think.