The Galaxy Rasbora, scientifically known as Celestichthys margaritatus, is a tiny and captivating freshwater fish species that has gained popularity among aquarists for its striking appearance. It is also commonly referred to as the Celestial Pearl Danio, Microrasbora sp. “Galaxy,” or simply CPD. Native to Myanmar (formerly Burma), these fish are appreciated for their small size, vibrant colors, and unique celestial-like patterns on their bodies. Physical Characteristics: Galaxy Rasboras are known for their distinctive physical features: Size: Adult Galaxy Rasboras typically reach a size of about 0.6 to 0.8 inches (1.5 to 2 centimeters). They are one of the smallest aquarium fish species. Coloration: They display a stunning combination of colors, including iridescent blues and greens on their bodies. The most eye-catching feature is the presence of vibrant orange-red spots on their sides, which resemble a celestial or galaxy pattern, giving them their common names. Fins: Galaxy Rasboras have small and delicate fins, which complement their overall appearance. Behavior and Care: Galaxy Rasboras are peaceful and sociable fish, typically found in small schools in the wild. Here are some essential aspects of their care: Tank Size: Due to their small size, a group of Galaxy Rasboras can be comfortably housed in a small to medium-sized aquarium. A tank with a capacity of 10 to 20 gallons (about 38 to 76 liters) is suitable for a small school of these fish. Water Parameters: Galaxy Rasboras thrive in slightly acidic to neutral water conditions with a pH range of 6.5 to 7.5 and a temperature range of 73-79°F (23-26°C). Maintaining stable water parameters is crucial for their well-being. Diet: These fish are omnivores and readily accept a variety of foods. Their diet can include high-quality flakes, micro pellets, live or frozen foods like daphnia, brine shrimp, and micro worms. Offering a well-balanced diet helps keep them healthy and vibrant. Group Size: Galaxy Rasboras are shoaling fish and should be kept in groups of at least six or more. Keeping them in larger groups reduces stress and allows them to exhibit their natural behaviors. Tank Setup: Provide hiding places with plants, caves, and driftwood. Live plants and fine-grained substrates are appreciated by Galaxy Rasboras. They also require relatively strong filtration to maintain water quality. Tank Mates: Due to their small size and peaceful nature, Galaxy Rasboras are best kept with other small, peaceful fish species. Suitable tankmates can include other small rasboras, danios, small tetras, and peaceful shrimp and snails. When selecting tankmates, avoid any larger or aggressive species that might intimidate or harm the Galaxy Rasboras. Breeding: Breeding Galaxy Rasboras can be challenging due to their specific requirements. They are egg scatterers that typically require a separate breeding tank with fine-leaved plants or a spawning mop for egg deposition. After spawning, the adults should be removed to protect the eggs and fry. The fry can be fed with infusoria or liquid fry food until they are large enough to accept tiny live or frozen foods. Health and Disease: Galaxy Rasboras are generally hardy but can be susceptible to common aquarium diseases. Maintaining stable water conditions, providing a balanced diet, and quarantining new additions to the tank are essential for their well-being. In summary, the Galaxy Rasbora, or Celestial Pearl Danio, is a captivating and petite freshwater fish that can add a touch of the cosmos to your aquarium. Their unique celestial patterns, peaceful nature, and small size make them an attractive choice for aquarists, particularly those interested in nano or planted tanks. By creating an appropriate environment, providing compatible tankmates, and ensuring proper care, you can enjoy the beauty of Galaxy Rasboras in your aquatic setup.
