Galaxy Rasbora (Celestial Pearl Danio) – Danio margaritatus

$6.05

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Description

Galaxy Rasbora (Celestial Pearl Danio) – Danio margaritatus

Introduction:
The Galaxy Rasbora, also known as the Celestial Pearl Danio (Danio margaritatus), is a popular and captivating species among nano aquarium enthusiasts. Characterized by its dazzling blue body with pearl-like spots and red-orange fins, this tiny fish grows to only 0.8 to 1 inch (2-2.5 cm) in length. It adds a striking beauty to aquariums, with its bold coloration and calm schooling behavior making it an excellent choice for smaller, well-planted tanks.

1. Natural Habitat and Behavior

Originating from the shallow, vegetative ponds of Myanmar, Galaxy Rasboras thrive in environments with dense plant cover and slow-moving water. They are naturally shy and tend to stay near vegetation for safety, making them more active in groups. In a home aquarium, they exhibit a peaceful, schooling nature and prefer to swim in the mid and bottom levels of the tank.

2. Aquarium Setup

A 10-gallon tank is recommended for a small group of Galaxy Rasboras, but larger tanks allow for more comfort and improved water quality. These fish feel secure in tanks with dense plantings like Java Moss, Anubias, Cryptocoryne, and floating plants that diffuse light and provide ample hiding spots. An ideal setup includes a dark substrate to enhance their colors and plenty of places for them to explore. They thrive in slightly acidic to neutral water with a pH of 6.0-7.5 and soft to moderately hard water. Optimal temperatures range from 72-78°F (22-26°C). A gentle filtration system is ideal to avoid disturbing the calm water they favor.

3. Diet and Feeding

Galaxy Rasboras are omnivores and benefit from a varied diet. Feed them a mix of high-quality micro-pellets, crushed flakes, and live or frozen foods such as daphnia, baby brine shrimp, and microworms. These foods should be small enough for their tiny mouths. Feeding small amounts twice daily helps maintain their health and coloration.

4. Compatibility with Other Fish

These peaceful fish do well in community tanks with similarly sized, calm species. Ideal tankmates include other small rasboras, small tetras, dwarf corydoras, and shrimp species like Amano Shrimp or Cherry Shrimp. Avoid housing them with larger or aggressive fish that may intimidate or outcompete them for food. Keeping them in groups of 8-10 or more encourages their natural schooling behavior, helping them feel more secure and display their best colors.

5. Common Challenges and Tips

  • Sensitive to Water Quality: Regular water changes and stable water conditions are essential for Galaxy Rasboras, as they can be sensitive to sudden changes.
  • Shyness and Schooling Needs: As a schooling species, they feel safest in larger groups. A well-planted environment with plenty of hiding spots will help them thrive.
  • Color Enhancements: For the best color display, feed them a varied diet and provide a dimly lit or shaded tank environment.

Conclusion

The Galaxy Rasbora (Danio margaritatus) is a stunning choice for aquarists seeking a peaceful, small fish with vibrant colors for a nano or planted tank. By providing an environment that mirrors their natural habitat—complete with dense plants, soft water, and calm tank mates—you can enjoy the beauty and calming behavior of these exquisite fish in your home aquarium.