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

当然，如果你见年老亚洲羊濑鱼，你就见所有了。

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

海洋健康个征兆就是较老鱼存在，譬如说这在中国海亚洲羊濑鱼。