Fish come in many shapes and sizes and now scientists have identified more than 180 species that glow in a wide range of colours and patterns. While the strange light show is not visible to humans, ...

Biologists have characterized new, unknown photoreceptors from the bioluminescent flashlight fish Anomalops katoptron. The photoreceptors known as opsins allow the fish to detect light with a specific ...

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' ...

Artificial light at night also makes guppies more courageous during the day, according to a new behavioral study. Artificial light at night also makes guppies more courageous during the day, according ...

From the fireflies that light up our backyards to the graceful, glowing jellyfish we admire in aquarium tanks, bioluminescence -- an organism’s ability to create its own light -- has captivated and ...

New research suggests that exposure to artificial light at night causes guppies to engage in riskier behavior during the day, and that could put them in danger. An animal’s environment is not just ...

Scientists at the NIH are mapping the activity of thousands of individual neurons inside the brain of a zebrafish as the animal hunts for food. In a small, windowless room that houses two powerful ...