Common name: Johnston Island damsel

General information

Johnston's Damsel, scientifically known as Plectroglyphidodon johnstonianus, is a small and colorful marine fish that is popular among reef aquarium enthusiasts. This species is known for its hardiness and adaptability, making it a suitable choice for both beginner and experienced aquarists. The fish has a striking appearance with a deep blue to black body and a vibrant yellow tail, which can add a pop of color to any aquarium.

Care

Johnston's Damsel is relatively easy to care for. It thrives in a well-established aquarium with plenty of live rock for hiding and grazing. This species can be territorial, so it's important to provide ample space and structure to prevent aggression, especially if housing multiple individuals or with other damselfish species. They are omnivorous and will accept a variety of foods including flakes, pellets, and frozen preparations.

Reproduction

In the wild, Johnston's Damsel forms breeding pairs or small groups. They are known to be egg-layers, with the male guarding and tending to the eggs until they hatch. In the aquarium, breeding is less common but can occur if the environment is stable and the fish are well-fed.

Habitat

Johnston's Damsel is native to the Western Pacific Ocean, where it is commonly found in coral-rich areas and lagoons. They prefer environments with strong water movement and are often observed at depths where reef structures provide shelter and feeding opportunities.