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Yellowfin Tuna

These distinctive, torpedo shaped fish get their name from their bright yellow fins and metallic bodies. While they only live about seven years, yellowfin tuna can grow over 400 pounds in this short time! 

 

Yellowfin tuna are metallic blue on their backs and upper sides, but their most striking features are their striking yellow fins and long yellow strip down their side. These large fish live in open tropical and subtropical waters across the Pacific, Indian, and Atlantic oceans. While they typically remain in the upper ocean close to the surface, they also make frequent dives to deeper, cooler waters. These deep dives are usually about 1 kilometer (3,280 feet) but have also been observed as deep as 1.6 kilometers (1 mile) below the surface.  

These dives aren’t the tuna’s only travel – yellowfin tuna go on great migrations, crossing entire oceans sometimes! These tuna travel in schools, often sticking together with fish of a similar size. These groups may include other species as well – younger fish have been recorded traveling with juvenile bigeye and skipjack tuna, while larger yellowfin tuna in the Eastern Pacific are frequently associated with porpoises. As they swim, yellowfin tuna opportunistically feed on a wide variety of prey including fish, squid, and crustaceans such as shrimp. In turn, they may be hunted by top ocean predators, including sharks and other large fish.  

 

 

Yellowfin tuna are fished both commercially and recreationally across the globe. While recent stock assessments indicate that most populations are currently not overfished or experiencing overfishing, the Indian Ocean stock remains a concern, highlighting the need for continued fisheries management and conservation effort. Regional fisheries management organizations such as the International Commission for the Conservation of Atlantic Tunas use scientific assessments to develop management measures such as catch limits and fishing closures to promote sustainable tuna populations. Because these fish migrate across such great distances, conservation and management actions need to be internationally coordinated. 

 

 

Several international organizations are committed to ensuring successful tuna management worldwide by adopting measures both to regulate the amount of fishing that takes place and increase transparency around tuna fishing. Oceana campaigns for responsible fishing, including increasing transparency of fisheries activities and requiring traceability for seafood like tuna.  

 

 

 

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