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 ...

Despite the vast evolutionary gulf between humans and the three-spined stickleback fish, the two species have adopted a common genetic strategy to acquire the skin pigmentation that helps each species ...

Researchers have looked at a species of fish to help unravel one of the biggest mysteries in evolutionary biology. "The importance of this work lies in the fundamental question: how and why do ...

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' ...

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 ...

WASHINGTON (Reuters) - 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 ...

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 ...