The Galaxy Rasbora (Danio margaritatus), also known as the Celestial Pearl Danio or Microrasbora sp. "Galaxy," is a captivating and relatively small freshwater fish that has gained popularity among aquarium enthusiasts. This species was first discovered in 2006 in the small ponds and rice fields of Myanmar, making it a relatively recent addition to the aquarium trade.

The Galaxy Rasbora is celebrated for its stunning appearance despite its small size. Adults typically reach lengths of about 0.6 to 0.8 inches (1.5 to 2 centimeters). Their body is adorned with vibrant iridescent colors, featuring a metallic blue-green hue with orange and red markings. The striking contrast and intricate patterns resemble a celestial galaxy, hence the common name.

Creating an optimal environment is crucial for the well-being of Galaxy Rasboras. They thrive in planted aquariums with subdued lighting, simulating their natural habitat. A tank size of at least 10 gallons is recommended for a small group of these rasboras. Fine-grained substrate, live plants, and floating vegetation provide hiding spots and mimic the conditions of their native environments.

Maintaining stable water conditions is essential for the health and vibrancy of Galaxy Rasboras. They prefer slightly acidic to neutral water with a pH range of 6.0 to 7.0. The water temperature should be kept between 73 and 79 degrees Fahrenheit (23 to 26 degrees Celsius). Regular water changes are beneficial to ensure optimal water quality.

Galaxy Rasboras are omnivores, and in captivity, they accept a variety of foods. High-quality micro-pellets, small live or frozen foods like daphnia and brine shrimp, and finely crushed flakes are suitable choices. A varied diet contributes to their overall health and encourages their vibrant colors.

These rasboras are known for their peaceful nature, making them excellent community tank inhabitants. They thrive when kept in schools of at least six individuals, and their schooling behavior enhances the visual appeal of the aquarium. They are compatible with other small, non-aggressive species that share similar water parameter requirements.

Breeding Galaxy Rasboras in captivity can be challenging due to their specific requirements. A separate breeding tank with densely planted areas, fine-leaved plants, and floating vegetation is recommended. The presence of moss or spawning mops provides suitable locations for egg deposition. After spawning, adults may consume their eggs, so it's common practice to remove them to a separate tank.

Galaxy Rasbora stands out as an exquisite and visually captivating addition to freshwater aquariums. With attention to their specific care needs and a well-designed environment, these rasboras can thrive and contribute to the aesthetic appeal of planted community tanks.