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Macho Makeover: Fish rapidly ascend social ladder

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9:14pm, October 18, 2005

Some fish really know how to swim to the top. Researchers have found that within minutes of recognizing a social void, a lowly cichlid can alter its looks and behavior to ascend to the dominant spot in its group. Moreover, the same researchers have identified the gene that is primarily responsible for the fish's changing physiology.

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