{{:blackskipjacktuna.gif?200|}}Euthynnus lineatus, the black skipjack or black skipjack tuna, is a species of ray-finned bony fish in the family Scombridae. It belongs to the tribe Thunnini, better known as the tunas.  They can be found in the eastern tropical Pacific from San Simeon, California to northern Peru and the Galápagos Islands.