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 ...

Many people who keep fish at home notice one common thing after some time. The fish does not look the same as it did earlier. The colour looks different. Sometimes it becomes brighter. Sometimes it ...

When fish suddenly change color, there are little photoreceptors embedded deep within their skin keeping watch to ensure the color is just right, according to new research. For the first time, ...

When Lorian E. Schweikert, Ph.D., reeled in a hogfish on a fishing trip to the Florida Keys, she noticed something strange after setting it down on the deck of the boat. Hogfish are known for their ...

From red to white to orange to blue, fish flesh can land almost anywhere on the color spectrum. What's behind this huge variation? A lot of things — from genetics to bile pigments. And parsing the ...

A newly discovered visual system in deep-sea fish could allow them to discern predators from prey in the low-light conditions found at the bottom of the ocean, new research suggests. A team led by ...

Fish that have never known sunshine could be able to see the world in shades of blue and green we can’t even imagine. By JoAnna Klein The silver spinyfin, or little dori, inhabits a layer of the deep ...