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 this video, I share the exciting moment when my guppies are breeding, showing early signs of pregnancy and natural breeding behavior. It’s a fun look into guppy care, breeding conditions, and what ...

Guppies are a small, pretty species of fish that are extremely popular for home aquariums. While they’re fun in captivity, in the wild they can cause major trouble. Native to South America, guppies ...