Jawless, bloodsucking fish could help us understand how humans and all other vertebrates evolved, scientists say. Turns out, lampreys — notable for their lack of jaw and generally terrifying ...

WASHINGTON (Reuters) - Primitive fish already may have possessed the genetic wiring needed to grow hands and feet well before the appearance of the first animals with limbs roughly 365 million years ...

Scientists at the Smithsonian and partnering organizations have discovered a remarkably primitive eel in a fringing reef off the coast of the Republic of Palau. This fish exhibits many primitive ...

The film explores the fascinating world of fish, detailing their evolution, anatomy, and diverse behaviors. It categorizes fish into three major groups: cartilaginous fish (like sharks and rays), bony ...