An “iridescent” catfish torpedoed through a rushing blackwater river in Brazil, navigating dead leaves and wood. Little did it know it was soon to be discovered as a new species. Once the “large” fish ...

You can see right through this little aquarium fish from Thailand: Its skin is almost completely transparent. But when the light hits it just right, its body flickers with shimmering rainbow colors.

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 ...

A new species of catfish was discovered from a river in Brazil, according to researchers. Photo shows a representative area of a river. Photo by Felipe Dias on Unsplash An “iridescent” catfish ...

Researchers found a new species of armored catfish from streams in northeastern Brazil, according to a new study. Photo by Tencatt LFC, Couto OLP, Santos SA, Sousa LM via Neotropical Ichthyology and ...

In a river of western Brazil, an “armored” creature with bumpy lips swam through the “dark tea-colored” waters. Something about it caught the attention of nearby scientists — and for good reason. It ...