(Phys.org)—A team of researchers with members from Sweden and the U.K. has found that female guppies with larger than average brains preferred to mate with males that were more colorful than average ...

When it comes to choosing a partner, some species prefer males that stand out from the crowd. Evolutionary biologists call the resulting process negative frequency-dependent selection. It means that a ...

When choosing more attractive guys, girl guppies with larger brains have an advantage over their smaller-brained counterparts. But there’s a cost to such brainpower, and that might help explain one of ...

A new study has found that female guppies are also plagued by unwanted male gaze. They are so plagued by male guppy sexual harassment, according to the new research, that they become better swimmers ...

Sexual harassment is a burden that females of many species face, and some may go to extreme lengths to avoid it. Female guppies, a popular aquarium fish, may even risk their lives to avoid too much ...

Guppies might look like mindless, mouth-breathing little bastards, but it turns out some of them make better dating decisions than we do. No, really—these tiny fish, with their infinitesimal brains, ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American We don’t normally think about males running ...

Researchers at Florida State University have recently discovered why female guppies, tiny tropical fish native to Central and South America, prefer males with unusual color patterns - and it has to do ...

Discover the remarkable story of three pregnant guppies that flew aboard Cosmos 1514 in 1983, giving birth to healthy fry and ...

Sexual harassment is a burden that females of many species face, and some may go to extreme lengths to avoid it. In a new paper from the June issue of the American Naturalist, Darren Croft (University ...