We now know how ghost catfish get their rainbow shine. These small fish, popular for home aquariums because of their near-complete transparency, get their iridescence from fibres in their muscles, ...

NEW YORK — 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 ...

"This is the first time a fish in this family has ever been seen alive," said fishery biologist Dr. Bruce Mundy with the NOAA. "This is really an unusual sighting." Video of the eel-like fish was ...

Ice particles from Saturn’s rings are falling into the planet’s atmosphere. In part because the particles vaporize, energy is released, heating up and making the sky glow at ultraviolet wavelengths, ...