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 ...

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 ...

In the guppy-keeping community, snow white guppies are highly prized due to their remarkable all-white look, which distinguishes them from many other popular strains. Snow white guppies, in contrast ...