Why is white albacore tuna not always white?

Since tuna is a natural product, you will notice some natural variation in the color of the fish. Albacore is the only species that can be labeled as "White Tuna"; however, the actual color of albacore tuna ranges from whitish pink to creamy beige. Factors such as the region where the fish was caught, or the age and diet of the fish can affect the color.