Among aquarium enthusiasts who keep bettas, it is usually the male fish that are known as the "colorful ones." Oftentimes the males are favored over the females not only for their color, but also ...

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 ...

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 ...

Planning a home aquarium means choosing fish that is healthy, vibrant, and visually attracting. Many people want an aquarium ...

Aggressive little male fish from Indonesia turn black when angry to show their dominance, scientists discover. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Without a mirror, it can be hard to tell if you're blushing, or have spinach in your teeth. But one color-changing fish has evolved a clever way to keep watch on the parts of itself that lie outside ...

While people and other vertebrates are color blind in dim light, some deep-sea fish may possess keen color vision to thrive in the near total darkness of their extreme environment thanks to a unique ...

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 ...

The fish may have evolved the ability to see in color at depth by using rod cells instead of cone cells to detect light. In the dim light of dusk, the world appears gray. That's because we, like most ...

After scuba diving and shooting video at Tunnels Beach one day I had a tourist come up to me and say she saw a clownfish out on the reef while snorkeling. I responded back and said that we do not have ...

DURHAM, N.C. -- A few years ago while on a fishing trip in the Florida Keys, biologist Lori Schweikert came face to face with an unusual quick-change act. She reeled in a pointy-snouted reef fish ...