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In page Cichlid:

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The family Cichlidae arose between 80 and 100 million years ago within the order Perciformes (perch-like fishes).[4] Cichlidae can be split into a few groups based on their geographic location: Madagascar, Indian, African, and Neotropical (or South American). The most famous and diverse group, the African cichlids, can be further split either into Eastern and Western varieties, or into groups depending on which lake the species is from: Lake Malawi, Lake Victoria, or Lake Tanganyika.[4][5] Of these subgroups, the Madagascar and Indian cichlids are the most basal and least diverse.[citation needed]