Celestial Pearl Danio (Galaxy Rasbora / CPD)

The Celestial Pearl Danio, also known as Galaxy Rasbora or CPD, is one of the most sought-after nano fish in the aquarium hobby. Famous for its galaxy-like pearl spotting and vibrant coloration, this species has become a top choice for planted aquariums and aquascaping setups.

Despite its small size, the CPD displays incredible detail and contrast, with bright spots across a dark body and flashes of orange-red in the fins. When kept in groups, they exhibit natural schooling behavior and become even more active and visually striking.

Why This Is One of the Most Popular Nano Fish

• Iconic “galaxy” pattern with pearl-like spots
• Perfect nano fish for planted aquariums
• Active schooling behavior when kept in groups
• Compact size ideal for smaller tanks
• High demand species among aquascaping enthusiasts

Water Parameters & Care

• Temperature: 22–26°C
• pH: 6.5–7.5
• Temperament: Peaceful
• Tank Level: Mid to lower
• Minimum Tank Size: 10–15 gallons

Celestial Pearl Danios thrive in planted aquariums with dense vegetation and gentle flow. They prefer stable environments and will show the best coloration in well-established tanks with consistent conditions.

They should always be kept in groups of at least 6 or more. Larger groups will display more natural schooling behavior and reduce stress. Ideal tank mates include small shrimp, rasboras, pygmy Corydoras, and other peaceful nano fish.

Topick Aquarium Conditioning Standard

At Topick Aquarium, all Celestial Pearl Danios are carefully conditioned and stabilized before sale. Our one-tank-one-system approach ensures each group is maintained in a clean, controlled environment without cross contamination.

Fish are gradually adapted to tap water parameters, making them more stable and easier to transition into most home aquariums. This results in healthier fish with higher long-term success, especially for sensitive nano species.

Species Specific FAQ

Are Celestial Pearl Danios good for beginners?
They are suitable for beginners with stable aquariums. While hardy once established, they prefer consistent water conditions.

How many should be kept together?
At least 6, but groups of 10 or more are strongly recommended for best behavior and coloration.

Can they live with shrimp?
Yes. They are commonly kept with Neocaridina and Caridina shrimp in planted tanks.

What makes them different from other nano fish?
Their unique pearl spotting and contrasting coloration make them one of the most visually striking nano species available.