Galaxy Rasbora (Celestichthys margaritatus)

Origin and Habitat:
The Galaxy Rasbora, also known as the Celestial Pearl Danio, scientifically named Celestichthys margaritatus, was discovered in 2006 in Myanmar (Burma). These small, brightly colored fish are native to the cool, shallow, and heavily vegetated waters of small ponds and streams in the Shan State of Myanmar. Their natural habitat is unique due to the soft, slightly alkaline water and dense aquatic plant life, providing shelter and food sources.

Appearance:
Galaxy Rasboras are admired for their vibrant, jewel-like coloration. Their bodies display a dark blue to black base color covered in tiny, pearl-like spots, which gives them the "galaxy" name. The males have brilliant red-orange fins, while females are slightly more subdued in color, making it easy to differentiate between the sexes. These fish remain small, growing to only about 1 inch (2.5 cm) in length.

Aquarium Care:
Due to their small size and delicate nature, Galaxy Rasboras require some specific care considerations to thrive in captivity:

• Tank Size: A small group can be comfortably housed in a 10-gallon tank, but larger tanks (20 gallons or more) are preferable if keeping them in schools or with other species.
• Water Parameters: These fish thrive in cooler temperatures ranging from 72°F to 78°F (22°C to 26°C), with a slightly acidic to neutral pH of 6.5 to 7.5. Regular water changes and stable water conditions are essential to their health.
• Diet: Galaxy Rasboras are omnivorous, enjoying a varied diet of high-quality micro-pellets, crushed flakes, and live or frozen foods like daphnia, brine shrimp, and bloodworms. Due to their small mouths, food should be appropriately sized.
• Behavior and Temperament: Galaxy Rasboras are peaceful and social, best kept in schools of at least 6 to 8 individuals. They are shy by nature, but when kept in groups, they display more natural and active behavior. These fish can be housed with other peaceful species like small tetras, rasboras, or shrimp.

Aquarium Setup:
A well-planted aquarium is ideal for Galaxy Rasboras. Plants such as Java moss, Anubias, and floating plants provide cover and simulate their natural environment. These fish appreciate low to moderate lighting, as too much brightness can cause stress. Gentle water flow is also recommended to mimic the still waters they inhabit in the wild.

Breeding:
Galaxy Rasboras can be relatively easy to breed in a well-maintained aquarium. Females will scatter eggs among plants, and the fry can be raised on infusoria or commercially available fry food. Ensuring a well-planted tank increases the chances of survival for the fry.

Lifespan:
With proper care, Galaxy Rasboras can live up to 3 to 5 years, making them a delightful long-term addition to a peaceful, planted community tank.

Conclusion:
The Galaxy Rasbora is a stunning, small fish that adds color and elegance to any aquarium. Their peaceful demeanor, combined with their striking appearance, makes them a popular choice for aquarists who enjoy well-planted, natural tanks. While they are relatively easy to care for, their small size and preference for stable water conditions make them best suited for hobbyists who can meet their specific needs.