Recapture on Japanese Longliner!
On August 9th, 2022, Katsue Koyano caught a blue marlin aboard Motohiko Goto’s boat, Gotch, in the waters of Hyoutan, Japan. The marlin was relatively small, with an estimated weight of 120 pounds. Just over a year later, in August of 2023, the blue marlin was recaptured in the waters of Micronesia. It was caught […]
TBF’s Annual Tag & Release Ceremony!
It’s almost here!! Time to celebrate and recognize the best in the billfishing world! If you haven’t already, there’s still time to snag some last minute tickets for The Billfish Foundation’s Annual Tag & Release Ceremony this Friday, February 16th, 2024. This is TBF’s chance to honor those anglers, captains, and mates who volunteer their […]
Tag Card Completion Guide
The Tag & Release Program is the cornerstone conservation program of The Billfish Foundation. Created in 1990, it was established to remedy the large gaps in knowledge of billfish life history. As a result, it has created the largest private billfish tagging database in the world, with over 270,000 records. The Tag & Release Program relies on Captains, anglers, and mates across the world to tag, release, and recapture billfish. It is a global citizen science effort that relies on the collective dedication of thousands of participants. However, it is not enough just to tag or release
2020 Billfish Recaptures Update
The most important data received through TBF’s Tag & Release Program is recapture data. A recapture occurs when a tagged billfish is caught by a second angler subsequent to the tagging and release of a fish. Recapture data contributes toward gaining a better understanding of the species age and growth rates by comparing the reported estimated weight at the time of tagging with the estimated weight upon recapture with consideration given to the amount of time between the two events. Recapture data also contributes to understanding a species possible site or area fidelity, if tagged and recaptured in the
2019 Conservation Record
The Billfish Foundation’s Tag & Release Program. We received over 11,000 new tag, release, and recapture records for billfish and tunas. These data are used by researchers and management organizations across the globe, helping us learn more about these great fish and how best to conserve them. Below is a link to a PDF of the final 2019 Conservation Record, including black marlin, blue marlin, sailfish, spearfish, striped marlin, swordfish, white marlin, bluefin tuna, and yellowfin tuna. 2019 Conservation Record Final This feat of citizen science would not be possible without the generous support of our Tag &
Sailfish Conservation Record 2019
The Billfish Foundation maintains the largest private tag and release database in the world, with over 260,000 records. In 2019 alone, over 11,000 new tag, release, and recapture records were added to this database, representing an enormous amount of data to help us learn more about billfish life history. Of these over 11,000 new records in 2019, 5,280 were of sailfish, including an incredible 34 sailfish recaptures. 73.6% of sailfish were released without tags, while 26.4% were tagged. To learn more about how to identify a sailfish, check out our youtube channel! An incredible 1,385 sailfish were tagged
2019 Conservation Record: Swordfish
The Billfish Foundation maintains the largest private tag and release database in the world, with over 260,000 records. In 2019 alone, over 11,000 new tag, release, and recapture records were added to this database, representing an enormous amount of data to help us learn more about billfish life history. Of these over 11,000 new records in 2019, 304 were of swordfish, including 13 swordfish recaptures. 17.3% of swordfish were released without tags, while 82.7% were tagged. To learn more about how to identify a swordfish, check out our youtube channel! A total of 224 swordfish were tagged
2019 Conservation Record: Striped Marlin
The Billfish Foundation maintains the largest private tag and release database in the world, with over 260,000 records. In 2019 alone, over 11,000 new tag, release, and recapture records were added to this database, representing an enormous amount of data to help us learn more about billfish life history. Of these over 11,000 new records in 2019, 2,536 were of striped marlin, including 6 striped marlin recaptures. 84% of striped marlin were released without tags, while 16% were tagged. To learn more about how to identify a striped marlin, check out our youtube channel! 413 striped marlin were tagged
2019 Conservation Record: Black Marlin
The Billfish Foundation maintains the largest private tag and release database in the world, with over 260,000 records. In 2019 alone, over 11,000 new tag, release, and recapture records were added to this database, representing an enormous amount of data to help us learn more about billfish life history. Of these over 11,000 new records in 2019, 502 were of black marlin, including one black marlin recapture. 66% of black marlin were released without tags, while 34% were tagged. To learn more about how to identify a black marlin, check out our youtube channel! A total of 172 black
