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 ...

A primitive fish straight out of a Jurassic Park movie was caught in west Florida’s Choctawhatchee River and even state biologists had to pause to figure out what they had. The discovery was made 100 ...

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 ...