Description: The body of the albacore tapers at both ends (cigar-shaped). The head is long and the mouth fairly large. The color is dark gray to metallic blue on the back becoming white to gray below. Albacore are easily distinguished from the other tunas occurring off California, with exception of the bigeye, by the extreme length of their pectoral fins (they extend well past the anal fin). Albacore and bigeye can best be distinguished by the characteristics of their livers. The albacore has a heavily striated (covered with blood vessels) liver while the liver of the bigeye is only lightly striated along the edges.