Female guppies with smaller brains can distinguish attractive males, but they don't recognise them as being more appealing or choose to mate with them, according to a new study by UCL and Stockholm ...

To see how harassment affects the female social bonds, the researchers put each of three pairs of small guppies (a random mix of females and small males) into a transparent cylinder, with all ...

In a Swedish lab, Alexander Kotrschal has deliberately moulded the intelligence of small fish called guppies. From a starting population, he picked individuals with either unusually large or small ...

Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation, technology, and food. She is the author of "The Ethiopian Wolf: Hope at the Edge of Extinction." Let's face it, some ...

Female guppies with smaller brains can distinguish attractive males, but they don't recognize them as being more appealing or choose to mate with them, according to a new study. The study adds weight ...

Best girlfriends might never let a man come between them — unless they're Trinidadian guppies. Among these fish, the presence of a harassing male can disrupt female social networks, causing ...