Tuna Fish Species, Types, Diet, Facts, Size, Habitat, Reproduction, Nutritional Facts can be checked from here and List of all Tuna Species is here.
A Tuna is a saltwater fish that belongs to the family Scombridae and also have the subfamily named Scombrinae. The species is divided into 15 species across five genera. The size of the fishes greatly varies from the bullet tuna to Atlantic Bluefin tuna. An average bluefin believes to live up to 50 years. Only a few species can maintain the temperature of the body including Tuna, Opah, and Mackerel sharks, higher than that of the surrounding water. The tuna has a sleek, streamlined body and is among the fastest swimming pelagic fish that is Yellowfin Tuna.
The species of Yellowfin is capable of travel up to 75 km/h. These are found in the warm seas and extensively fished commercial which is popular as a game fish. As a result of overfishing, few species of the tuna are close to extinction such as southern bluefin tuna. The ‘Thunnini’ tribe is a monophyletic clade which includes 15 species and five genera. The species that belongs to the genus Thunnus are known as the true tunas. Recently, it is found that Atlantic bluefin and Pacific bluefin tuna were subspecies of a single species.
Tuna Fish Size and weight
Tuna fish belongs to the genus Thunnus which also known by Tunny. The seven species of oceanic fishes and other large that constitute the genus Thunnus are of great commercial value as food. They are related to mackerels and are placed with them in the family Scombridae. The species vary in the size and weight considerably. These are elongated, robust and streamline fishes that have a rounded body. Generally, tunas are dark from the top and silvery from the belly side, often with an iridescent shine.
The tuna fishes have the different sizes and weight for each species. The length of the species varies from 50 cm of the bullet and weight 1.8 kg up to Atlantic bluefin tuna which length goes up to 4.6 m and weight 684 kg. Some species of tunas are at the condition of extinction from the southern sea. The fishes fulfill the major requirement of the food in countries like Japan, China, United States, and the Arab World. Japan is the huge market for the tuna to use in the sushi and sashimi. The Atlantic bluefin tuna is one the fastest, largest, and most beautiful in color of all world’ fishes.
Tuna Fish Species
The family Scombridae consist of various species in it which including the Bluefin, Yellowfin, Blackfin, Albacore, Bigeye, Dogtooth, longtail tuna. From the species of tuna, some are placed in the category of endangered and vulnerable due to the unstable population in the various regions.
There are few species which are very near for the extinction. If the situation remains for the coming few years then we might lose the species from this place. The lifespan, size, and weight of the species also vary according to their species and genus. Some of the most common Tune Fish Species are mention below.
Types of Tuna Fish
The fishes range in the color and size from the large bluefin with dark red flesh to smaller skipjack have lighter fleshed. The peoples like to have some species in raw as sushi while others are ideal for canning. The species might have the 15 species but mostly come across from these four: Yellowfin, bluefin, albacore, and skipjack. Here are the few types of tunas that actually find in the various regions:
Tuna Fit Habitat
Tunas found in the habitats or places including lakes, coastal estuaries, wetlands, mountain streams, rivers, and even alpine tarns. For both long and short fins, places to hide during daylight are very important water weed, undercut banks, tree roots, and debris piles are all suitable for the tunas.
They are able to squeeze into very small spaces and dig down into the mud. The large fin prefers to live in the fast flowing water and stony river beds and often found further upstream. While shortfins are preferred to have the habitat slower moving water and mostly seen in the swamps, rivers, lakes, and streams near the coast. However, both species are found in the same place.
Tuna Fish Diet
The diet of the tunas is almost the same as they belong to the one family. The diet can be a little different due to change in the region and the availability of the food. The species eat a wide range of prey throughout their lifespan. The diet of species changes at their age increases. At the young age, eat the tiny zooplankton and their prey size increases with the age and size of the tunas. In the adult age, they like to eat fairly large bony fishes and invertebrates.
Tuna Fish Health Benefits
There are eight species of the tuna which are denoted nomadic which means that they keep migrating. They are easily found in temperate and subtropical waters of the Atlantic Ocean, Blackwaters, and the Mediterranean Sea. They are generally supplied to the major markets across the world such as Japan and Australia along with the United States.
The fish is the powerhouse of the nutrients including Omega-3 fatty acids, magnesium, vitamin A, iron, potassium, B6 and B12 are the benefits for the health. The benefits are including improving eyesight and hair quality to keep the heart healthy.
Tuna Fish Nutrition
Tuna is the best source to gain the omega -3 fatty acids which include in your diet. It is a type of polyunsaturated fat that can only be found in fish, seed, and nuts. The Omega-3 fatty acids are particularly abundant in coldwater fish such as tuna, sardines, mackerel, and heering.
The tunas contain the huge amount of nutrition facts which includes calories, sodium, potassium, carbohydrates, dietary fiber, and sugars along with protein. The diet includes vitamin A, vitamin C, Calcium, and Iron in it.
Tuna Fish facts
Tuna Fish Reproduction
The reproduction in the various species of Tuna is much similar. These have the very unique way of reproduction in which spawning must occur. Spawning is basically when the eggs or sperm are released into the aquatic habitat for reproduction to occur. There are both genders required for the reproduction from which male and female tuna. The spawning usually takes place from March to July, but in some other species have its different time for spawning due to change in climate and region.
The highest level of the spawning period usually takes place in the first two months, March and April. There are few species which can spawn more than one time in a year. A female can release the large amount of the eggs which can be 2.6 million eggs per spawning. The eggs are enclosed in the oil droplet and very quickly developed and tend to hatch within 48 hours. Once the hatching occurs, the young ones remain around the hatching area for some period and then, can migrate in the search of food and mates. Most of them will not able to reach even their adulthood as they eaten by the other predators.
The tuna fish is the elongated, robust, and beautiful fish found across the world in the temperate and tropical water. Some species from the tuna is at the edge to extinction due to overfishing. The peoples have saved to this amazing species before it extinct completely from the oceans. Almost three or four species are still in the category of endangered and vulnerable. If you want to know detailed information about the Tuna Species then you can explore this website to know more.
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