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Contact: Jim Barlow, Life Sciences Editor
jebarlow@uiuc.edu
217-333-5802
University of Illinois at Urbana-Champaign
Caption: 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.
Credit: Photo courtesy of Kimberly Hughes
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Related news release: Colorful, rare-patterned male guppies have survival advantage in the wild
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