Guppies are beginner-friendly, low-maintenance fish that thrive in a 10-gallon tank, with a peaceful temperament and omnivorous diet. Males are smaller with vibrant colors, while females are larger ...

Scientists have long suspected that big brains come with an evolutionary price — but now they've published the first experimental evidence to support that suspicion, based on their efforts to breed ...

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 ...

Set up a new guppy breeding tank with us and enjoy a peaceful nighttime feeding session as these vibrant little fish settle ...

Leadership during cooperation runs in the family for tiny fish called Trinidadian guppies, new research shows. University of Exeter researchers studied leadership in guppies by selectively breeding ...