Celestial Pearl Danio Care Guide

The Celestial Pearl Danio, also known as the Galaxy Rasbora or Microrasbora sp. ‘Galaxy’, is a much sought-after fish species. Its vibrant colors and unique patterns are sure to captivate hobbyists. Here’s a care guide to help you provide them with a thriving and enriching environment.

Originating from Southeast Asia, particularly the Chindwin River basin in Myanmar, the Celestial Pearl Danio is a small fish, growing up to 1 inch. It has a striking blue hue on its body, making it look like a celestial gem!

For tank setup, these delicate creatures do well in well-established aquariums with plenty of hiding spots. Water parameters should be stable with a pH level 6.5 to 7.0 and temperature range of 73-79°F. Feed them a balanced diet with high-quality flake food supplemented with occasional live or frozen treats.

Unlike other tropical fish species, these celestial beauties aren’t prolific breeders. To breed them, set up a separate breeding tank with fine-leaved plants like Java moss or spawning mops, where the females can lay eggs safely.

Sadly, wild populations of Celestial Pearl Danios have declined due to deforestation and over-harvesting for the aquarium trade. It’s our responsibility to source them from reputable breeders and help conserve their natural habitat.

Overview of Celestial Pearl Danio

The Celestial Pearl Danio, also known as the galaxy rasbora or celestial pearl fish, is a stunning freshwater fish from Southeast Asia. Its eye-catching colors have made it a popular choice among aquarium enthusiasts.

Let’s explore the key aspects of the Celestial Pearl Danio:

Size Lifespan Temperament
Adult Size 1 inch (2.5 cm) 3-5 years Peaceful

Water Conditions:

  • Temperature: 72-78°F (22-26°C)
  • pH: 6.0-7.8
  • Water Hardness: Soft-Moderate

Tank Size: 10 gallons (38 liters) minimum

This fish does best in a peaceful community tank with other non-aggressive species. It prefers slightly acidic to neutral water conditions. Stable water temperature is essential for its health.

This species shows a breathtaking display of colors when it feels safe in its environment. Its red, blue, and orange patterns add to its subtle iridescent hues, which shimmer with proper lighting.

It was discovered in 2006 by aquarium hobbyist Kamphol Udomritthiruj in Myanmar (formerly Burma). Its celestial beauty captured the attention of aquarium enthusiasts, leading to its popularity.

Tank Setup for Celestial Pearl Danio

Creating an ideal tank setup? Here’s the essentials:

  1. Tank size: 10 gallons minimum to provide space for these active fish.
  2. Water parameters: Keep stable, temp 20-25°C, pH 6.5-7.5.
  3. Filtration: for clean water and to eliminate potential toxins.
  4. Lighting: Moderate levels to show off their colors.
  5. Substrate: Fine-grained, like sand or gravel.
  6. Plants: Java moss, Amazon swords.
  7. Decorations: Driftwood and rocks to create caves and crevices.
  8. Tank mates: Peaceful fish like neon and ember tetras.
  9. Feeding: High-quality flakes or pellets with occasional live or frozen foods.
  10. Pro Tip: Monitor water and do regular maintenance.

Feeding and Nutrition

It’s essential to feed celestial pearl danios! Here’s what to give them:

  • High-quality dry flakes or pellets, twice a day.
  • Frozen or live foods, like brine shrimp and bloodworms, as a treat, once or twice a week.
  • Plus, you can give them occasional vegetable matter, like blanched spinach or lettuce.
  • But, be careful not to overfeed. This can cause health problems and bad water quality. Monitor their body condition and adjust the quantity accordingly.

A hobbyist once added live daphnia to a tank with celestial pearl danios. They started hunting, just like in the wild. It was fun to watch and gave them mental stimulation and exercise.

Water Maintenance

Caring for Celestial Pearl Danios? Water maintenance is a must! Temperature, pH level, hardness, ammonia, nitrite and nitrate levels should all be kept at optimal levels for these vibrant fish to thrive. Regularly monitor these parameters with testing kits and equipment and perform partial water changes to keep things in check. This is key for the overall health and happiness of your Celestial Pearl Danios – don’t miss out on this essential step!

Compatibility and Tank Mates

For a flourishing habitat for Celestial Pearl Danios, be sure to think carefully about their tank mates. Here’s a table that gives an overview of fish species that are suitable:

Tank Mate Compatibility
Ember Tetra High
Cherry Barb High
Harlequin Rasbora Medium
Pygmy Corydoras Medium
Nerite Snail Low

Apart from these potential partners, it is important to remember that Celestial Pearl Danios do best in peaceful, community aquariums. They are small and quiet, making them great for living with other non-aggressive species.

For more harmony, it’s a good idea to keep these delicate fish in groups of six or more. This encourages their natural behavior and lowers stress. Make sure they have plenty of hiding spots and vegetation too.

When bringing in new tank mates, keep an eye on them. If there are signs of aggression or distress, add more shelter or separate incompatible species.

By picking compatible tank mates and creating a calm atmosphere, the beautiful colors and patterns of the Celestial Pearl Danio can really stand out.

Breeding Celestial Pearl Danio

  1. Breeding Celestial Pearl Danio requires careful attention. Achieve success by having a spacious tank with ample hiding spots and plants.
  2. Keep the water temperature at 78°F and pH level at 6.5-7.0.
  3. Feed them a varied diet of live and frozen high-quality foods with protein-rich items like brine shrimp and daphnia.
  4. The tank should be at least 10 gallons.
  5. Male Celestial Pearl Danios don’t display courtship behavior, so you should remove the female after she lays eggs to stop her from eating them.

Celestial Pearl Danio was only discovered in 2006 in Myanmar. An aquarium fish dealer found it in the Shan State. Since then, these fish have been popular in the aquarium trade.

To breed Celestial Pearl Danio, create an ideal environment. Follow the guidelines to enjoy these captivating fish in your own aquarium.

Common Diseases and Health Issues

Celestial Pearl Danios have a delicate nature, so it’s important to be mindful of any potential health issues. Paying attention and providing proper care can keep them healthy. Common illnesses include:

  • Swim Bladder Disorder – this makes it hard for the fish to stay afloat.
  • Ich – white spots on the body, fins, and gills.
  • Fungal Infections – cotton-like growths.
  • Bacterial Infections – fin rot or sores.
  • Parasitic Infections – external or internal.
  • Stress-Related Illnesses – weakens the immune system.

Good nutrition, clean water, and a stress-free environment are key for preventing disease. Regular water changes also help.

Once, a hobbyist added a new fish that had velvet parasite. They reacted quickly, isolated and treated the infected fish, and took steps to protect the others. This taught them the need for caution and quarantine when adding new fish!


Phew! Let’s end this care guide by looking into the amazing details and true history of celestial pearl danio. We’ve discussed tank setup, water conditions, feeding habits and breeding. Also, their capability to adjust to various water parameters – great for both beginner and experienced aquarists! Plus, their colors and peaceful nature make them elegant additions to any aquarium.

Did you know about their origin story? In 2006, tropical fish exporter Kamphol Udomritthiruj discovered these stunning creatures in Myanmar (formerly Burma). He was captivated by their beauty and rarity. So, he brought them to the fishkeeping community, allowing hobbyists to have them in their tanks.

Don’t forget – they are living creatures who need our care! Therefore, our responsibility is to provide them with a healthy environment and meet their needs. This way, these mesmerizing fish will continue to thrive and enchant us with their celestial splendor!

Frequently Asked Questions

1. What is a Celestial Pearl Danio?

A Celestial Pearl Danio, also known as Galaxy Rasbora or Celestial Pearlfish, is a small freshwater fish species native to Myanmar. It is highly sought after for its beautiful coloration and peaceful nature.

2. How big do Celestial Pearl Danios grow?

Celestial Pearl Danios typically grow to a size of around 1 inch (2.5 cm) in length. They are considered small fish and are well-suited for small to medium-sized aquariums.

3. What are the ideal tank conditions for Celestial Pearl Danios?

Celestial Pearl Danios thrive in aquariums with temperatures ranging from 72 to 77 degrees Fahrenheit (22 to 25 degrees Celsius). They prefer well-filtered water with a slightly acidic to neutral pH (around 6.5 to 7.5) and a water hardness of 2 to 7 dGH.

4. What should I feed my Celestial Pearl Danios?

Celestial Pearl Danios are omnivorous and accept a wide variety of foods. Their diet should include high-quality flake or pellet food, as well as occasional treats like frozen or live daphnia, brine shrimp, or bloodworms. It’s important to provide a balanced diet to maintain their vibrant colors and overall health.

5. Can Celestial Pearl Danios be kept with other fish?

Yes, Celestial Pearl Danios are generally peaceful and can be kept with other small, non-aggressive fish species. However, it’s best to avoid keeping them with large or aggressive fish that may intimidate or harm them. They are known to thrive in community tanks with peaceful tankmates.

6. How can I breed Celestial Pearl Danios?

Breeding Celestial Pearl Danios can be challenging but rewarding. Provide a separate breeding tank with plenty of vegetation for the fish to spawn and lay eggs. Use soft, slightly acidic water and maintain a temperature of around 75 to 78 degrees Fahrenheit (24 to 26 degrees Celsius). The eggs usually hatch within 24-48 hours, and the fry can be fed infusoria or powdered fry food until they are large enough to eat small live or frozen foods.