Add Yahoo as a preferred source to see more of our stories on Google. An “armored” creature meandered through the slow-moving water of a stream in Brazil. Maybe it was a glimmer of its iridescent ...

An “armored” creature meandered through the slow-moving water of a stream in Brazil. Maybe it was a glimmer of its iridescent exterior, or its distinctive “mask-like” pattern, but as the creature swam ...