It turns out color isn't just fashionable for guppies: According to a new UBC study, the more orange a male, the more virile it is. The research published in Nature Ecology & Evolution shines light on ...

Add Yahoo as a preferred source to see more of our stories on Google. Male guppies have an extraordinary diversity of colors. They found that the more colorful males were up to two times more sexually ...

Look into a tank of male guppies and something becomes immediately obvious: almost no two fish look alike. Orange spots, black bars, iridescent flecks of blue — the variation is extraordinary, and ...