The amount of sperm released decreased sharply with each mating during a single day, reducing the males' fertilization rate.

A “weird” species of “walking” fish is helping shed light on how humans ... and sometimes dig for prey. Although they look like limbs, scientists say the “legs” are actually an ...

The snail darter is not a thing. It was just a common perch, say scientists. USFWS This one weird little fish — a beigeish critter found on sandy river bottoms in Tennessee and fond of munching ...