Common name: Flashlight fish

General information

The Flashlight Fish, scientifically known as Photoblepharon steinitzi, is a captivating species renowned for its unique ability to produce bioluminescent light. This light is emitted from organs located beneath the eyes, which are populated by symbiotic bioluminescent bacteria. The fish can control the intensity and timing of the light by using a muscular eyelid to cover or reveal the light organ. This nocturnal species uses its bioluminescent capabilities for communication, attracting prey, and evading predators.

Care

Caring for Flashlight Fish in captivity requires a specialized environment that mimics their natural nocturnal habitat. They thrive in dimly lit aquariums with plenty of hiding places and a peaceful community. It's essential to maintain high water quality and stable conditions to support the health of the bioluminescent bacteria. A varied diet of meaty foods, such as brine shrimp and krill, is necessary for their well-being.

Reproduction

Reproduction of Photoblepharon steinitzi in the home aquarium is rare and not well-documented. In the wild, they are believed to scatter their eggs in open water, where they are fertilized externally. The larvae are planktonic before settling down to a benthic lifestyle.

Habitat

Flashlight Fish are typically found in tropical and subtropical waters, often around reef slopes and caves. They prefer depths ranging from the shallows down to about 400 meters, where they can take advantage of the darkness. During the day, they retreat to the safety of caves and overhangs, emerging at night to feed.