Tuna all have big eyes, huge mouths, and prominent fins, and the big bluefin naturally has eyes as big as saucers, a ferocious-looking mouth and a large, powerful head.
鮪魚頭大壯壯，都有大眼巨嘴、魚鰭發達的特徵，身材特大的黑鮪自然也是銅鈴大眼、血盆大口，又因為背鰭與腹鰭都是灰黑色，而被稱為「黑鮪」。