You might expect a stingray to lay eggs, like many of the world’s fish. However, stingrays give birth to live young, similar ...

Giving birth to live young is thought to mainly occur in mammals and sharks, but a new study suggests that it was once a common mechanism for reproduction. A large group of ancient fish carried its ...

As one of the world’s most diverse vertebrates, fish can come in a variety of shapes, colors, and sizes. With over 33,000 species inhabiting the Earth’s aquatic habitats, some are bound to be a bit on ...

An international team of researchers have identified three new species of enchanting, pustular, tree-dwelling toads from Africa. Their solution for having offspring away from water? Skipping the ...