Jae+Ho

Yellowfin tuna (Thunnus albacares) By Jae Ho Baek

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​ = Introduction =

Many you think Yellowfin tuna are delicious sushi. Did you know they’ re about 2 meters long and they can reach 300 lb; with that weight they can swim 37km per hour! Yellowfin tuna has three names, Ahi, Thunnus albacares and Yellowfin tuna, what kind of fish has three names! They live all around the world between 40° N to 35° S. Because they live in many places people likes to eat tuna sushi, so they catch them. Yellowfin tuna’ s known as good sushi meat so many people thinks, there are millions of them and they cost a lot, humans overfish them. Now they are in endangered.

= How Yellowfin tuna looks =

Do you know Yellowfin tuna is one of the biggest tuna species; they can reach 300 lb and 2meters long. They look like bluefin tuna but the color of the body and fins are different. They have big **dorsal** fins and **caudal** fin; because dorsal fin and the **caudal** fin are yellow, people call them Yellowfin tuna. Their body is shaped of rain drop, their head is shaped the bottom of the rain drop and their back of the body shaped the upper part of rain drop. Yellowfin tuna’ s upper body is gray, middle part is Yellow and lower body is sliver. At the back of the body, Yellowfin tunas have yellow spikes on the top and bottom.



= Where Yellowfin tuna live =

Yellowfin tunas live worldwide, all around the world except the Arctic Ocean and Antarctic Ocean, between 40°N and 35°S. That means they can go to Africa from Canada. Yellowfin tunas are a school fish, they usually move with other kinds of tunas or with dolphins, which means they need big space under water. That’s why Yellowfin tunas live in deep open water. In deep open water, they lives in **Epipelagic**, is a word for the zone between surface and 200 meter deep water.

=Diet and predators = Yellowfin tunas like to eat many varieties of fish, and they can catch fast moving fishes because of their body shape, they can reach 37 km per hour. Sometimes large Yellowfin tunas eat smaller members of their family like skipjack tuna and Frigate tuna. Yellowfin tunas are in the middle of the food chain. They eat small fishes, and they can hunt by big sharks or human. Human are worst enemy of Yellowfin tuna, because people catches them for fun, for food or for money. Now Yellowfin tunas are endanger, because some people catch them for money, sometime they overfish them, and is still no rules about over catching.

=Conclusion = Now you learned about Yellowfin tuna, they can grow about 2 meter and reach 300lb, that doesn’t mean they’re scary. They’re big warm blood animals who travel thousands km per year. They can be delicious sushi, but don ’ t try to eat because they’ re endangered, if you have to eat it don’ t eat too much or Yellowfin will disappear for forever.