大鲅鱼，身体呈纺锤形，鳞细，背部黑蓝色，腹部及两侧银灰色，嘴大而长，牙齿锋利，群集，是生活在海洋的中上层、以小鱼虾为食的比较凶猛的鱼。每年深秋时节，大鲅鱼在煞厉的大北风阵阵催促之下，便紧追着鱼食──小丁鱼由北向南洄游，路经长海各岛，这便是海岛上江头（礁石 Catfish, the body was spindle-shaped, squamous, dark blue back, both sides of the silver and gray belly, large and long mouth, teeth sharp, cluster, is living in the upper and middle oceans, small fish for food comparison Ferocious fish. In the late autumn of each year, under the urging of the big northern wind, the catfish catch the fish - the small anchovy migrates from north to south and travels across the islands of the sea, reef