Female cichlid fish are drab. But they prefer flashy, colorful mates. Evolution has therefore produced a bright red and deep blue version.
Male (top) and female Pundamilia pundamilia and Pundamilia nyererei from Makobe Island. Credit: Martine ...
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Male (top) and female Pundamilia pundamilia and Pundamilia nyererei from Makobe Island. Credit: Martine ...
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