Lanternfish are small, bioluminescent fish found in deep ocean waters, typically at depths of 200 to 1,000 meters. They belong to the family Myctophidae and are known for their unique ability to produce light through specialized organs called photophores. This light helps them communicate, attract prey, and evade predators. These fish play a crucial role in the marine ecosystem as a significant food source for larger animals, including squid, sharks, and whales. Lanternfish are also important for studying ocean health and dynamics, as their populations can indicate changes in the marine environment.