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 ...

Conservation Biology, Vol. 21, No. 6 (Dec., 2007), pp. 1573-1583 (11 pages) Ex situ conservation is of increasing importance to prevent the extinction of endangered animals in the wild. Despite low ...

From our perspective, guppies lead simple lives—eating, reproducing, and, after a couple of years, dying. Apply a little evolutionary pressure, though, and they can evolve larger brains that make them ...

Leadership during cooperation runs in the family for tiny fish called Trinidadian guppies, new research shows. Leadership during cooperation runs in the family for tiny fish called Trinidadian guppies ...