They form both free and associated schools, with adults generally forming schools of similarly sized individuals. The free-swimming schools tend to contain large individuals and are mono-specific. In the Eastern Pacific, schools are often associated with dolphin pods, which is not common elsewhere.
Yellowfin accounted for about 31% of the 4.8-million-tonne global tuna catch in 2021.
|Size (cm)||Weight (kg)||Age (yrs)|
The following four yellowfin stocks are assessed and managed by the RFMOs:
Our Status of the Stocks report summarizes the status of yellowfin tuna worldwide according to the most recent scientific assessments. The report includes:
It also reviews the management measures for yellowfin that Regional Fisheries Management Organizations (RFMOs) have adopted.
Use our “Interactive Stock Status and Catch Tool” to visualize, download, and share data about yellowfin tuna:
Our research and advocacy work aims to ensure, on a global level, that tuna resources are well managed and protected from overfishing.
An ISSF report uses the Marine Stewardship Council (MSC) scoring system to evaluate both the health and RFMO management of 23 tuna stocks worldwide, including bluefin.