Bluefin Tuna, also known as Blue Fin Tuna and Bluefin Tuna Kush, is a hybrid weed strain from Western Canada made by crossing Tuna Kush and Blueberry. The effects of Bluefin Tuna are believed to be euphoric and energized. Smokers say this strain makes them feel creative and happy. Bluefin Tuna has 23% THC.