In a river of eastern Brazil, an “armored” creature swam along searching for the next meal to sink its “copper colored” teeth ...

In a river of northern Brazil, an “armored” creature swam through the water in search of its next meal — or tried to at least. But something caught the striped animal and pulled it to the surface.

Placoderms are a class of prehistoric armoured fish that first appeared during the ... From small bottom-dwellers to giant predators, placoderms occupied oceans, rivers and lakes.

Scientists found an “armored” creature with a “tall” head ... 6 in the peer-reviewed Journal of Fish Biology. During the visits, researchers caught several unfamiliar-looking catfish.