In a river of northeastern Brazil, an “armored” creature with “large” eyes paused to rest against a rock. The maze-like ...

the species requires large stretches of river and very specific environmental conditions for its seasonal journey to spawn and breed. While scientists don’t know exactly how the fish move ...

Deep below the surface of a river in northern Brazil, a “shy” creature tucked its “armored” body into a rocky crevice. Divers ...

A major reason why scientists know so little about giant freshwater rays is because they hide at the bottom of the river. They’re not considered a good food fish in Southeast Asia, so they’re ...

At the river, researchers caught dozens of bottom-dwelling fish that didn’t quite match ... “small” eyes and “fleshy” lips. Photos show the “yellowish brown” coloring of the new ...