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 ...

Evolving roughly 27 different times in the long history of fish, bioluminescence -- the biological production of light -- is one of the flashier survival tools used for luring prey, communication, 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 ...