Thursday, September 10, 2009

About Tuna Types

Learning About Tuna Types
If you are a fan of tuna, then learning about tuna types will more than likely be right up your alley. These little fish may be tiny, but they supply food for millions of people around the world. What's more is that you can take tuna meat and mix it with a variety of ingredients to get the perfect snack or meal. Tuna also are an important part of the marine food chain, which allows many diverse and unique species to survive. If you are up for learning about tuna types, then keep reading.
A Brief Introduction to Tuna
Let us begin by talking about the fish in question: tuna. Tuna is a term used to denote species of fish that live primarily in the Atlantic and Pacific oceans. These fish are carnivorous and dwell in cold water and warm water alike, which makes them very accessible to fishermen. In fact, tuna fish are some of the most heavily fished sea creatures in the world. They can grow anywhere from 3 feet to 10 feet, and can weigh from a few pounds to hundreds of pounds. Indeed, the largest tuna ever caught – a bluefin tuna – weighed in at a whopping 1,496 pounds! The size of the tuna will depend on what type of tuna it is, ranging from the smallest – bullet tuna – to the largest – northern bluefin tuna. We will now learn more about the tuna types themselves.
All About Tuna Types and What They Are
The term 'tuna' actually refers to a collection of species in the family Scombridae. They are divided into five smaller groups called genera: Thunnus, Euthynnus, Allothunnus, Auxis, and Katsuwonus. Typically, fish in the Thunnus genus are the largest, and fish in the Auxis are the smallest. We will mostly talk about tuna that belong to the Thunnus genus, since they are the ones that are most common recognized.
When you eat tuna from the grocery store, chances are you are eating albacore tuna. Albacore is the most popular type of tuna and is the only type whose meat can legally be called white. Other popular types of tuna as far as commercial purposes go are yellowfin tuna and bluefin tuna. As mentioned above, bluefin tuna are the largest tuna in the world and have a strong yet delicious taste. If you buy light canned tuna, chances are you are buying skipjack tuna, a genus that tends to be smaller (around 4 feet long). This type of tuna is in the same genus as bullet tuna, which is the smallest type out there.
One of the most interesting thing about tuna types is how they all adapt to their environments. Most types of tuna are highly mobile and migrate from place to place – or ocean to ocean with the bluefin. This makes them hard to pin down at times. Also, some of the larger tuna types, like bluefin tuna and bigeye tuna, have the ability of raising their temperature above the temperature of the water around them – which means they can better adapt to their surroundings and survive. Furthermore, there are other types of tuna, like dogtooth tuna, that are not types of tuna at all (but are closely related).
In conclusion, there are many wonderful things about tuna types and the similarities and differences between them that are worth exploring. Whether you enjoy them for their taste, or are just a marine enthusiast or fisherman, learning about tuna types will surely prove to be quite interesting and useful to you in the future.

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