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 ...

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, ...

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 ...

A variety of animals have male-specific ornament traits and these ornaments are favored by female choice. Which male traits are preferred by females often varies among females. Genetic mechanisms that ...

In the animal world, sexual reproduction can involve males attempting to entice or force females to mate with them, even if they are not initially interested. This male behaviour is driven by ...

Guppies with big brains outlive others by outmaneuvering their predators—but this only works in female guppies, not males. The rest of this article is behind a paywall. Please sign in or subscribe to ...

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 ...

In a new study, researchers found that female guppies often choose a mate that physically stands out from the rest of the pack because of a common type of learning called habituation. Through ...

Habitat: The tropical fresh waters of northern South America and the southern Caribbean. The excitement of the new. The attraction of the exotic. Sometimes it’s nice to have a change. This is a ...

You know how it is: You're minding your own business when up swims a male guppy determined to copulate with you. It's not your fertile time of the month, you're not giving off attractive chemical ...