The "flashier" a male guppy is, the more likely a female guppy will choose him as a mate, giving him the opportunity to pass his genes along to the next generation.

Female guppies with large brains show a preference for brightly colored males, while those with small brains do not.

The female large-brained guppies were champions at returning to the right number of symbols, outperforming their smaller-brained counterparts by about 40%.

While it’s a known fact that female guppies prefer orange and unusual patterns on their male partners, the team found that the same cells that form their brains also control color diversity on ...

A new study reveals that the brighter the orange on a male guppy, the more virile it is, solving a long-standing evolutionary puzzle about their flashy colours.

We've seen in our simulations that the more brightly colored a male guppy is, the more likely he will be seen -- and eaten -- by a predator. In a simulation or in the wild, where predators are ...