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Nature 435, 29-30 (5 May 2005) | doi:10.1038/435029a; Published online 4 May 2005

Evolutionary biology:  Ghost of speciation past

Thomas D. Kocher1

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Lurking in the rivers of Botswana are the remnants of a diverse flock of cichlid fishes, whose origins can be traced to a lake that vanished more than 2,000 years ago.

Just add water. A simple recipe, but when applied to cichlid fishes it reliably causes spectacular evolutionary radiations of hundreds of new species.

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