What reliance dictates seasonal fishing action in the Florida Keys for yellowfin?

Answer

The movement of baitfish pushed by the Gulf Stream

For many fishing grounds along the North American East Coast, including the Florida Keys, the migratory timing and local density of yellowfin are intimately connected to the massive oceanic current system known as the Gulf Stream. The action is seasonal because the stream's path and associated eddies govern where baitfish are transported and concentrated. When baitfish are moved by this powerful current, the yellowfin follow suit, making the timing of these movements critical for anglers targeting the Keys.

What reliance dictates seasonal fishing action in the Florida Keys for yellowfin?
locationhabitatTunafishyellowfin