Although, the average size of a Bluefin tuna is around five feet in length, with an average weight of one hundred and fifty pounds. For example, the fishing of Bluefin tuna around Canada is strictly catch-and-release only. This has been mirrored in many countries, as the conservation of Bluefin tuna is taken more and more seriously as time goes on. Although there have been some efforts to farm Bluefin tuna, it never works out as well as the wild-caught fish.
The meat taken from a wild Bluefin is said to be quite fatty, almost marbled, which is a trait that gives it a fabulous consistency and taste. Globally, Bluefin tuna has a substantially high value, regularly being worth as much as two-hundred dollars per pound.
At the lowest end of the spectrum, this can drop to around forty dollars per pound, which is still not particularly cheap. The history books tell a different story, though — especially in Tokyo, Japan. Atlantic bluefin tuna use a mechanism referred to as countercurrent exchange to keep its core muscles warm and prevent the loss of heat when swimming.
They are most unique due to the ability to thermoregulate by transferring warm blood to cool oxygenated blood. Within three to five years, they reach their full size and full sexual maturity. Satellite tracking systems have proven that spawning groups gather together in large formations and have been observed in the western Mediterranean and the Balearic Islands. Although they span the entire Atlantic Ocean, they are known to return to the same area when spawning.
Female Bluefin Tuna have been known to produce up to 30 million eggs. The amount of eggs they produce depends on their age and size. Male and female Bluefin Tuna release millions of sperm and eggs into one water channel to lessen the possibility of all of the eggs getting eaten by prey. This also increases the likelihood of the eggs becoming fertilized.
Luckily the eggs start to hatch after only 2 days. Bluefin Tuna enjoy both cold water and tropical water. They span from North American water all the way to European waters throughout the year. They are most likely to be found in the Gulf of Mexico and the Mediterranean Sea.
They are known to be flexible and often change their area of concentration and migration routes due to their ability to thermoregulate their body temperature and live in various seawater temperatures.
Atlantic Bluefin Tuna are carnivores and have a large appetite. They eat various ocean life such as small fish, squid, crabs, lobster, and other crustaceans. Bluefin Tuna are known to be predators from the day they hatch, and they prefer mackerel, herring, and eels schools. They use a filter-like process of feeding to eat small organisms and zooplankton. They prefer to swallow their meals whole.
Their prey increase in size as they grow. And since they grow at such a rapid rate, Atlantic bluefin tuna require a lot of food, but luckily they have a wide range of choices of prey. The current population of Atlantic Bluefin Tuna is decreasing. Commercial fishing has put this species at high risk of endangerment. Atlantic Bluefin Tuna are highly sought out due to their size, density, and taste. The most popular Tuna fishery is located in the Mediterranean Sea. Many people are arrested yearly for not following proper regulations when fishing for Bluefin Tuna.
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