A schooling fish that's strong and aggressive, the blackfin tuna averages around 20 pounds, but fish up to 30 pounds are common along the Treasure Coast. Blackfin tuna can be caught all year, but the best action is in the spring and fall months. Typically caught on the edge of the Gulf Stream while targeting multiple gamefish, blackfin tuna will explode on live baits and peel off line. They are excellent table fare, and during the summer months can be encountered on the edges of the bonito (little tunny) schools. In the fall, smaller blackfin and skipjack tuna move into the area in big schools, and there are days when anglers can catch double digit numbers of both species. There are no size or bag limits on blackfin tuna, but as a rule, we only keep the larger ones or a couple of fish for the table.