Common name: Fingered Dragonet

General Information

The Fingered Dragonet, scientifically known as Dactylopus dactylopus, is a fascinating and unique species often sought after by experienced aquarists. Known for its elongated body and vibrant coloration, this dragonet is a captivating addition to marine aquariums. Its distinct appearance includes finger-like extensions on its pectoral fins, which it uses to "walk" along the substrate, giving it a dragon-like gait.

While not as commonly seen in home aquariums as other dragonet species, the Fingered Dragonet is appreciated for its unusual behavior and striking looks. Its natural habitat includes sandy and muddy bottoms of lagoons and coastal reefs, where it blends in seamlessly with its surroundings.

Care

Caring for the Fingered Dragonet requires a bit of expertise, as this species thrives best in well-established tanks with plenty of live rock and open substrate areas. These fish are known to be shy and may take some time to acclimate to new environments, so patience is key. A mature tank with a thriving population of copepods and other microfauna is ideal, as these provide a natural food source.

Due to their specific dietary needs, they are best kept by aquarists who have experience in maintaining stable, mature reef environments. They require a tank of at least 150 liters (40 gallons) with plenty of hiding spaces and a sandy substrate to mimic their natural habitat.

Diet and Feeding

Fingered Dragonets are primarily carnivorous, feeding on small invertebrates and crustaceans found within the substrate. In captivity, they can be fed a diet of live foods such as copepods, amphipods, and brine shrimp. Some may eventually accept frozen foods, but live foods are crucial for their health and well-being.

Feed them small amounts several times a day to mimic their natural grazing behavior. Ensuring a continuous supply of live food is vital, as they may not readily accept prepared foods.

Behavior and Compatibility

These dragonets are generally peaceful and can be kept with other non-aggressive species. They are solitary creatures and do not require the company of their own kind. However, caution should be taken when housing them with more boisterous or aggressive tank mates that may outcompete them for food.

Fingered Dragonets are not toxic and pose no threat to other tank inhabitants. They spend most of their time near the substrate, where they "walk" using their pectoral fins, a behavior that is both intriguing and entertaining to observe.

Reproduction

Breeding Fingered Dragonets in captivity is challenging and not commonly achieved. They exhibit a fascinating courtship behavior, where the male displays his vibrant colors and extended fins to attract a female. Spawning usually occurs in the evening, with the release of eggs and sperm into the water column. Raising the fry requires a separate breeding tank and specialized care, as the larvae are delicate and need appropriate food sources like rotifers.

Health and Common Issues

Fingered Dragonets can live up to 5-7 years in captivity with proper care. Selecting a healthy specimen is crucial, as they are sensitive to changes in water quality and diet. Look for individuals that are active and have clear eyes and vibrant colors.

Common health issues include malnutrition and stress from inadequate food supply or aggressive tank mates. Maintaining optimal water conditions and a steady food source is essential for their well-being.

Habitat

The natural habitat of the Fingered Dragonet includes the Indo-West Pacific region, particularly in sandy and muddy substrates of lagoons and coastal reefs. They are adapted to environments with gentle water flow and plenty of hiding spots among rocks and coral rubble.