Danio Margaritatus

Meet Danio Margaritatus, the celestial pearl danio — a tiny, starry jewel that instantly elevates any freshwater setup. Usually sold as Galaxy Rasbora or Microrasbora sp. 'Galaxy', this miniature marvel stays just 1–2 cm when fully grown, delivering a mesmerizing display without demanding space.

This species earns its name from the constellation-like pattern that graces its body. Pearlescent tones shimmer with iridescent blue-green spots, turning the tank into a quiet night sky every time they glide through the plants. It’s a color story you can watch all day, especially as a cohesive school moving through a well-planted scene.

Ideal habitat and care: Danio Margaritatus thrive in mature, planted aquariums with gentle water flow. Create a inviting environment with dense carpeting of fine-leaved plants, floating vegetation for shade, and plenty of hiding places. Keep water conditions stable — soft to moderately soft water, a temperature around 22–26°C (72–79°F), and a pH between 6.0 and 7.5. Regular, modest water changes and good filtration help maintain the clear colors and calm demeanor this species is known for.

Diet and feeding routine: these small, omnivorous fish welcome a variety of foods. Offer high-quality micro flakes or pellets, supplemented with live or frozen treats like daphnia, brine shrimp nauplii, and finely crushed bloodworms. Feeding 2–3 small portions per day aligns with their natural foraging habit and supports vibrant coloration and active schooling.

Behavior and compatibility: the celestial pearl danio is a peaceful, community-friendly species best enjoyed in groups. Aim for a school of 6–10 individuals to encourage natural behavior and striking choreography through mid-to-upper water columns. Pair them with other small, non-aggressive species such as nano tetras or other tiny rasboras. Avoid housing them with aggressive tank mates or strong currents that disrupt their relaxed, shoaling lifestyle.

Who this is for: ideal for planted nano tanks, small community setups, and hobbyists who relish a dramatic color display with minimal footprint. If you’re building a serene, nature-inspired freshwater aquascape, the Danio Margaritatus brings motion, depth, and a celestial sparkle that captivates both new and experienced aquarists.

In short, the celestial pearl danio isn’t just another tiny fish — it’s a living constellation that rewards patient, plant-rich setups with movement, color, and a sense of wonder that stands out in any aquarium.