Widespread throughout the temperate and tropical Western Atlantic, this very accessible and aggressive surface-schooling tuna is a favorite of anglers. When thrashing baitfish or chummed into a frenzy, blackfin are great targets for fly-rodders as well as popper enthusiasts. Although considered good eating, the blackfin is not as choice as its larger relative, the yellowfin. However, their dogged fight is, pound for pound, the equal of any tuna. While footballs of five to 10 pounds are often thick, at times they might run two or three times that size. The all-tackle record is a 49-pound, 6-ounce fish caught off Marathon, in the Florida Keys, in 2006.