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  • Colorful, rare-patterned male guppies have survival advantage in the wild


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      Guppies are small tropical fish native to Trinidad and other areas of the Caribbean. They are characterized by sexual dimorphism in size and color patterns. The color pattern variation of the males (left and right columns) is mostly genetic variation, not environmental. New data indicates that rare-colored males not only attract females (center column), they are also more likely to survive predation.

      Photo courtesy Kimberly Hughes

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