Exposure to artificial light at night can causes at least one species of fish to behave more courageously during the day, and that could put them in danger ...

Another suggestion to explain why fish are attracted to lights at night could be that they have evolved to prey on naturally bioluminescent organisms, which give off light at night as well.

Light-sensitive cells in the eyes of some fish do double-duty. In pearlsides, cells that look like rods — the stars of low-light vision — actually act more like cones, which only respond to ...