There are over 1,700 cichlid species, many almost identical save for their uniquely adapted jaws which have evolved to eat crustaceans, mollusks, worms, algae, plankton, and even the scales of other fish.

其种类超过千七百种，许种类几乎模样，但了吃甲壳动物、软体动物、虫类、藻类、浮游生物甚至其他鱼类的鳞片而演化出不同的颔。

Any cichlid that ventures out will be snapped up.

旦慈鲷切入电场，立刻就捕食的对象。

Perhaps the best example of this dental diversity can be seen in cichlids.

最能呈现这种牙齿样性的例子应该慈鲷。

Like packs of sharks, they're on the prowl for sleeping cichlids.

它们群鲨鱼，边游边寻找熟睡中的慈鲷。

But here, almost every corner of the ecosystem is occupied by a different species of cichlid.

但在这里，几乎生态系统的每个角落都被不同种的慈鲷占据。

Sex determination in cichlid fish is pretty complicated.

慈鲷鱼的性别决定相当复杂。

And there are some species such as cichlids.

还有些慈鲷鱼这样的物种。

Taborski's experiment that for cichlids at least the rent must be paid in a timely fashion or punishment will be faced

塔博尔斯基的实验表明，对于丽鱼科鱼类来说，租金必须按时支付，否则就面临惩罚。

What's unique about a cichlid is that they have this jaw out here that we can see.

慈鲷鱼与众不同之处在于，我们可以看到它这里突出的下颚。

In the Rift Valley, it is a great place to study evolution right now, in the Rift Valley we have these lakes and the lakes are inhabited by a type of fish called a cichlid.

在裂谷地带，这个现今研究进化的绝佳场所。在裂谷地带， 我们拥有这些湖泊， 而湖泊中栖息着种名慈鲷的鱼类。

Scientists were keeping a bunch of cichlid fish in isolation, in separate tanks, as part of a study on species hybridization.

科学家们了研究物种杂交，将批慈鲷鱼隔离饲养，分别放在不同的水族箱里。

And so what we have seen is an explosion of cichlid populations in these lakes in Africa.

因此，我们见证了非洲这些湖泊中慈鲷鱼种群的激增。

It started with just probablyone or a few different types of cichlids and they have adapted to fill all of these different roles.

这过程始于可能仅有的个或少数几种慈鲷鱼，它们已经适应并占据了所有这些不同的生态位。