These two-metre wide craters are fish-made. 这些2米宽的土丘是鱼儿们的杰作

127. Its tropical waters teem with more fish species than any other lake.
     生活在这个热带湖泊里的鱼类 比其它湖泊都要丰富
128. There are 850 different cichlids alone,
     这里有850多种不同的慈鲷
129. all of which evolved from just one single ancestor isolated here thousands of years ago.
     它们都是从一个数千年前 即被隔绝在此的祖先进化而来的
130. These two-metre wide craters are fish-made.
     这些2米宽的土丘是鱼儿们的杰作
131. Fastidiously maintained by the males, these bowls are courtship arenas.
     雄鱼一丝不苟地维护着坑巢 因为这里正是求爱的场所
132. Cichlids are caring parents.
     慈鲷是尽心尽职的父母
133. Brooding young in the mouth is a very effective way of protecting them.
     它们将鱼苗含在嘴里 这是一种保护它们的有效方法

来自《行星地球 第一季 第三集 Planet Earth S01E03 淡水》第 130 行