Researchers have traced cell origins critical to vertebrate evolution by studying a group of primitive, bloodsucking fish called lampreys. When you purchase through links on our site, we may earn an ...

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 ...

Fish are doubtlessly feeling about now whatever fish feel when the urge to spawn kicks in. In but a little while – if not today or yesterday – female and male will be heeding an ancient directive by ...

The greatest threat the fish now face is the dams, which will probably lead to their demise, said Aaron Jackson, who heads the Confederated Tribes of the Umatilla Reservation efforts to restore ...

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 ...

The strange-looking gar was caught in Silver Glen Springs, a natural spring that is about a 70-mile drive north from Orlando, Florida. Video screengrab WanderLensArtistry A “primitive” fish that is ...