Blackfin Tuna

FL Blackfin Tuna Fishing Guide

FLSaltwater
FishingThunnus atlanticusFlorida2026
  • Second dorsal and anal fins not elongated
  • Bronze stripe on sides
  • Second dorsal fin dusky and all finlets dark with white edges
  • Long pectoral fin nearly reaches below the beginning of the second dorsal fin

Similar Species: Yellowfin tuna, T. albacares (elongated second dorsal and anal fins); and bluefin tuna, T. thynnus (has short pectoral fins and reaches a much larger size)

Size: Common to 28 inches

Habitat & Range

Coastal to offshore waters

Life History

Feed on small fishes, invertebrates and plankton.

References