As a form of adaptation to new food sources, cichlid fish develop mouths with different shapes. Over time these events led to the formation of new species.
The cichlid fish species in Lake Malawi descend from a common ancestor. When the availability of food in its natural habitat (Lake Tangayika) began to decrease, these fish ancestors began to migrate to Lake Malawi via the Ruhuhu River in search of new food sources. As a form of adaptation to new food sources, cichlid fish develop mouths with different shapes. Over time these events led to the formation of new species.
Cichlids can be found around the world in a variety of different habitats from Asian rivers and streams to African train lakes. These fish come in a wide variety of body sizes, but most of them are compressed or elongated laterally in half the body shape. Cichlids range in size from 1 inch to over 3 feet in length.
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