- Second dorsal and anal fins very elongated (about 1/5 of total length)
- Second dorsal fin and all finlets are yellow and may be trimmed in black
- Golden-yellow stripe on sides
- Long pectoral fin reaches below the beginning of the second dorsal fin
Similar Species: Blackfin tuna, T. atlanticus (lacks elongated second dorsal and anal fins)
Size: Common to 60 inches
Spawning peaks in the summer; feed on fishes and invertebrates.