Somewhere in the ocean's depths swims a small fish with a see-through skull, tubular eyes, and visual tricks that break every rule biology textbooks lay down about how vertebrates see.

Maharashtra has launched a project to eliminate alien fish such as the African Catfish, Tilapia and Suckermouth Catfish from the Ujani dam reservoir and replace them with native freshwater species ...

Alien fish are already strange, but watching one face off against a live blue crawfish was next level. The clash of colors ...

Add Yahoo as a preferred source to see more of our stories on Google. A searobin 'walks' on the seafloor, using modified fin-ray appendages. (NOAA Office of Ocean Exploration and Research) The ...