Dominant males of an Indonesian species of fish turn black during periods of heightened aggression, scientists have discovered. Their blackened markings, which quickly emerge at the start of a ...

Illustration of the silver spinyfin (Diretmus argenteus)—the vertebrate with the highest number of opsin genes. Image: (Alexandra Viertler, University of Basel) A newly discovered visual system in ...

A new study has shown that the dottyback, a small predatory reef fish, can change the color of its body to imitate a variety of other reef fish species, allowing the dottyback to sneak up undetected ...

Deep-diving fish have a problem: The only light that penetrates their watery environment is blue and green hardly enough of a palette for flashy color patterns. Now, a new study reveals these fishes' ...

A team of researchers has provided the first example of how color patterns on a coral reef fish species can drive its evolution into many distinct species. The researchers looked at feeding and mating ...

DEAR NOLA’S MOM: These peppy little fish, also known as Siamese fighting fish are customarily kept as solo pets. The main colors include: blue, red, turquoise, yellow, white and orange — and there are ...

The radiant plumage of flamingos wouldn’t be possible without their special diets. Neither would the color of salmon, or koi. The right food can even dye humans – especially babies. At a zoo I visited ...

Deep-diving fish have a problem: The only light that penetrates their watery environment is blue and green — hardly enough of a palette for flashy color patterns. Now, a new study reveals these fishes ...