Here’s another advantage of having a big brain: you know how to choose the hottest mates. As it turns out, female guppies with bigger brains are smart enough to prefer attractive male guppies. Their ...

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 ...

‘If you are surrounded by ugly friends, you look better’ London: When it comes to mating, guppies treasure their ugly friends — because they look so good by comparison. An article published on ...

Female guppies love a man that sticks out. Or at least they do in the lab. When scientists study the reproduction of the popular aquarium guppy in the laboratory, they often see something called ...