Eight fascinating animal species, such as Darwin's frog and mouthbrooding cichlids, exhibit unique reproductive strategies where males carry fertilized eggs in their mouths until they hatch.

This small bottom dwelling fish lives on the bottom ... we captured the kaleidoscope of cichlid species, and the mouth brooding behaviour on camera. But to film the cuckoo catfish in action ...

The lake is known for its “exceptional number” of cichlid fish species, but “many species ... has “large” eyes and a “small” mouth. A photo shows the brown and black coloring ...