Of course, if you've seen one elderly Asian sheepshead wrasse, you've seen them all.

当然，如果你一的亚洲羊濑鱼，你就所有的了。

One good sign of health for our oceans is the mere existence of older fish, like this Asian sheepshead wrasse in the China Sea.

海洋健康的一个征兆就是较的鱼的存在，譬如说这在中国海的亚洲羊濑鱼。