Javanese Damselfish

Neoglyphidodon oxyodon

The Javanese Damselfish, known scientifically as Neoglyphidodon oxyodon, is a damselfish species residing in the coral reefs of the western Pacific Ocean. Its distribution includes the Indo-Australian Archipelago, with presence noted in Indonesia, the Philippines, and the Ashmore Reef in the Timor Sea. This fish is typically found in shallow waters, from the surface down to 4 meters, often seeking refuge among Acropora coral formations in lagoons and on reef flats. Adults of this species can grow up to 15 centimeters in length. They are characterized by a grayish-black color, while the juveniles display a dark blue body with light yellow markings and blue lines that diminish as they age. The Javanese Damselfish is an omnivore, consuming both zooplankton and filamentous algae. Divers will notice their active behavior during daylight hours, as they are diurnal and known for defending their territory. Reproduction involves males preparing a site on rocks or coral to attract females for egg-laying. Once the eggs are laid and fertilized, males protect them until they hatch, which usually occurs within a week. The eggs are sticky and remain attached to the substrate. The Javanese Damselfish is classified as Least Concern by the IUCN.