Buy Now The toy comes in four different fish varieties on Amazon for $16.99. Get your pet a carp, clownfish, rainbow trout or red carp. More than 13,000 Amazon shoppers give it a 5-star rating, but ...

The ghost catfish has a see-through body that flickers with rainbow colors when the light hits it. Now, scientists have cracked the case of how the fish creates its iridescent glow. (Qibin Zhao ...

its body flickers with shimmering rainbow colors. Now, scientists have figured out how this fish — called the ghost catfish — creates its iridescent glow. That glow comes from within ...

But when the light hits it just right, its body flickers with shimmering rainbow colors. Now, scientists have figured out how this fish — called the ghost catfish — creates its iridescent glow. That ...