Common name: Splitfin flashlightfish

General information

The Flashlight Fish, scientifically known as Anomalops katoptron, is a captivating species known for its bioluminescent organs located beneath its eyes. These light organs are inhabited by symbiotic bacteria that produce light through a chemical reaction. This light is used for various purposes such as communication, attracting prey, and evading predators. The fish can control the light by rotating the organ or by using a black flap of skin to cover it, effectively 'blinking' the light on and off.

Care

Flashlight Fish are nocturnal and require a dimly lit aquarium to mimic their natural habitat. They are best kept in groups as they are schooling fish in the wild. A tank with plenty of hiding places and a tight-fitting lid is essential, as these fish can be skittish and may jump if startled. They feed on small live or frozen foods like brine shrimp and krill.

Reproduction

Little is known about the breeding habits of Anomalops katoptron in the wild or in captivity. They are not commonly bred in home aquariums, and most specimens are wild-caught.

Symbiosis

The symbiotic relationship between the Flashlight Fish and its bioluminescent bacteria is a fascinating example of mutualism. The fish provides a safe habitat and nutrients for the bacteria, while the bacteria produce light that the fish uses for survival.

Habitat

Anomalops katoptron is found in tropical waters of the Indo-Pacific region. They inhabit reef environments and prefer to stay in caves or under overhangs during the day, venturing out at night to feed.