Difference Between Yellowfin and Bluefin Tuna

Among all the seafood, fish is the most consumed dish in the world. It is the richest source of protein. And in fish also tuna is above the rest. It belongs to the tribe Thunnini. It is rich in proteins, fats, vitamins, and other healthy nutrients. It is being served in several ways, mostly in China and in Chinese cuisine such as sushi, etc. 

Among them are Yellowfin and Bluefin Tuna. Both of them are quite difficult to differentiate due to all their similarities. Still, they can be differentiated if looked at closely and briefly.

Yellowfin vs Bluefin Tuna

The main difference between Yellowfin and Bluefin Tuna is in their appearance and their meat type. Both of them are different in color, Yellowfin being yellow and Bluefin blue. Except for this, they are also different in size of their body and of their pectoral fin. They lived in different types of weather and, due to that, are caught in different areas. Except for all of the above differences, they are also different in terms of their affordability.

Yellowfin vs Bluefin Tuna

Yellowfin tuna is smaller in size but has a longer pectoral fin and is mainly found in pelagic waters of both tropical and subtropical oceans. It is mainly found in cold weather. As compared to other tuna, there are more easily available and, therefore in quite inexpensive in nature.

Bluefin tuna is the type of tuna that is originally blue and is bigger. This type of tuna is likely to be found in open ocean areas and lives in a hot or warmer wheatear. It has a larger pectoral fin. It is mostly served as sushi and is a good option for a person who wants to gain weight. It is very rare.

Comparison Table Between Yellowfin and Bluefin Tuna

Parameters of ComparisonYellowfin TunaBluefin Tuna
Pectoral finLongerShorter
Lives inCold weatherWarm weather
Type of meatLean meatDelicious fat in meat
AffordableMore affordableLess affordable

What is Yellowfin Tuna?

They are shaped like a torpedo and have a long anal. They are yellow and grey. They live around 6 or 7 years. They migrate very often.

Following are some interesting facts:

  1. They migrate all around the world.
  2. They weigh around 180 kgs.
  3. They can swim up to 50 miles an hour.
  4. They can be microscopic.
  5. The scientific name of Yellowfin tuna is Thunnus Albacares.
  6. This is also known by another name, ‘Ahi.’
  7. It can be found in the Pacific, Atlantic, and Indian oceans.
  8. They eat squid, crustaceans, etc.
  9. Like Bluefin tuna, they release millions of sperms.

It is a member of true tuna fish. This is rich in nutrition content. It is mostly used in raw dishes rather than cooked dishes. It is among the best tuna and is less expensive as million of them are available and due to which is eaten rare.

Daily consumption of this can lead to all the harmful diseases a tuna causes due to the presence of mercury and high calories. Therefore, they should only be consumed once or twice a week.

What is Bluefin Tuna?

It is the largest tuna that lives a life of 40 years. They can dive up to 3000 feet. They have the sharpest vision and can easily hunt. There are three different types of Bluefin Tuna:

  1. Pacific: scientific name of this tuna is Thunnus Orientalis
  2. Atlantic: scientific name of this tuna is Thunnus thynnus
  3. Southern: scientific name of this tuna is Thunnus maccoyii

Following are some interesting facts about Bluefin Tuna:

  1. They can dive deeper.
  2. They migrate vast distances.
  3. They have a silver, metallic grey, and blue body.
  4. They are among the top predators in an open ocean.
  5. They release millions of sperms and reproduce every spawning season.

Health benefits of Bluefin tuna include the following:

  1. It is low in sodium, making it a better choice for a healthy heart.
  2. It has omega-3 fatty acids, which are very helpful in brain functioning, reducing any heart-related risk, or even prevent several other diseases.
  3. It is rich in vitamins, proteins, and minerals.

Although Bluefin tuna has all the above-mentioned and some extra benefits, consuming an excess of it can be dangerous and unhealthy for the body. It is also high in calories and fat content. Therefore it might not be the best option for someone who wants to lose weight. And, of course, as with any tuna, it has the highest mercury proportion.

Main Differences Between Yellowfin and Bluefin Tuna

  1. When compared to the size of the tuna, Bluefin has the upper hand due to its bigger size, while Yellowfin is much smaller when compared.
  2. Despite bigger sizes, the pectoral fin of both of them is opposite of their sizes. Bluefin has a shorter pectoral fin, while Yellowfin has a relatively long pectoral fin.
  3. Both of them are different in colors. As their name suggests, Bluefin tuna has a blue body (mostly light blue) and tail of dark blue, whereas Yellowfin Tuna has a yellowish body with a hint of grey and yellowtail.
  4. Bluefin tuna is mostly found where the climate is relatively colder, whereas Yellowfin is a tropical species and hence found in warmer ocean waters.
  5. If you want to catch a Bluefin Tuna, the perfect area would be the deep sea, if it mostly lives and is founded there, whereas, in the case of Yellowfin, it is founded in an open area near drop-offs.
  6. Both of them have a different kind and texture of meat Bluefin have meat with a delicious and large amount of fat in it, whereas Yellowfin Tuna has very lean meat.
  7. In terms of affordability, Bluefin tuna is less affordable due to its expensive nature, whereas Yellowfin tuna is much more affordable in comparison due to lower prices.


Hence all the difference between both the variants of tuna is cleared. Tuna is the healthiest food due to all its nutrition content. But it is said that any type of tuna should not be consumed on a daily basis or in excess. If consumed in excess, it causes several problems, including depression and loss of vision, etc., as it increases the mercury level in the body. Hunting tuna is also banned in some countries as it will be endangered if hunted with this speed.

Also, it cannot be afforded by many due to its high prices. Only a part of the population can afford tuna. It is expensive as it is demanded more, but the supply rate is not equal to the demand.


  1. https://link.springer.com/article/10.1007/s002270050231
  2. https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1467-2979.2005.00197.x
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