Blackfin tuna (Thunnus atlanticus) weigh a maximum of 45 pounds, but are usually caught in the 20-pound range.  They grow quickly and reproduce early.  Compared to other tuna species they’re diminutive:  yellowfin can weigh 150 pounds and bluefin sometimes exceed 900 pounds.  There is much less commercial interest in blackfin than other species, but they’re… Read More