albacore

noun, plural (especially collectively) al·ba·core, (especially referring to two or more kinds or species) al·ba·cores.

a long-finned tuna, Thunnus alalunga, of warm or temperate seas, the flesh of which is valued for canning.
any of various tunalike fishes.

noun

a tunny, Thunnus alalunga, occurring mainly in warm regions of the Atlantic and Pacific. It has very long pectoral fins and is a valued food fishAlso called: long-fin tunny

large variety of tuna, 1570s, from Portuguese albacora, from Arabic al bakara “milk cow;” the fish so called for its size.