Celestial Pearl Danio Macro Shot

Celestial Pearl Danio Care Guide

This “Celestial Pearl Danio Care Guide“, will be your go-to resource for understanding and caring for these beautiful & exotic freshwater Danio.

Known for their striking appearance and dynamic presence in aquariums, Celestial Pearl Danios, also referred to as Galaxy Rasboras, are a popular choice among aquarists.

However, their care involves specific needs and attention to detail. Whether you’re a seasoned fishkeeper or new to the hobby, understanding the importance of proper care is crucial to maintaining the health and happiness of these delicate creatures.

Related: Zebra Danio

Unique Fact: The Celestial Pearl Danio was only discovered in 2006 in Myanmar, making it a relatively new addition to the aquarium world.

Related: More Fish that Love to Eat Pest Snails!

Celestial Pearl Danio with Cherry Shrimp

Celestial Pearl Danio: Quick Fact Table

Name:Celestial Pearl Danio
Scientific Name:Danio margaritatus
Max Size:1 inch (2.5 cm)
Lifespan:3-5 years
Appearance:Small, bright blue spots with red fins
Water Parameters:Soft; pH: 6.5-7.5; dH: 5-10 degrees
Compatibility with Other Fish:Peaceful; best with small, non-aggressive fish
Community Size:Group of 6 or more for confidence
Behaviour:Peaceful, shy, prefers hiding places
Lighting:Moderate, with shaded areas
Feeding:Small live foods, micro-pellets, and high-quality flakes
Breeding Difficulty:Moderate, requires specific conditions

Celestial Pearl Danio Gold

Species Summary

The Celestial Pearl Danio, scientifically named Danio margaritatus, hails from small, vegetated ponds in South East Asia. This relatively new discovery has captured the hearts of many due to its unique appearance, resembling a starry night sky.

These fish are small but make a significant impact with their vibrant colours and playful swimming patterns.

  • Origin: Myanmar, South East Asia
  • Discovery: 2006
  • Appearance: Bright blue body with pearl-like spots

Unique Fact: These fish are often called “Galaxy Rasboras” due to their starry appearance.

Lifespan and Size

  • Lifespan: Typically, Celestial Pearl Danios live for 3-5 years in captivity.
  • Factors Affecting Lifespan: Quality of care, diet, and tank conditions.
  • Size: They grow to about 1-1.5 inches in length.

Unique Fact: Despite their small size, these nano fish have a big personality, often displaying intriguing behaviors in the aquarium.

Celestial Pearl Danio Group Swimming

Celestial Pearl Danio Care

Caring for Celestial Pearl Danios involves creating an environment that closely mimics their natural habitat. This ensures they thrive and display their natural behaviours. Here’s what you need to know:

  • Ideal Tank Size: Minimum of 10 gallons, allowing ample space for swimming and exploration.
  • Water Parameters: Keep water temperature between 73-79°F, pH levels at 6.5-7.5, and water hardness around 5-10 dGH.
  • Tank Conditions: These fish prefer a planted aquarium with plenty of hiding spots. Gentle filtration is recommended to mimic their calm natural waters.

Unique Fact: Celestial Pearl Danios flourish in well-planted tanks, often using plants like natural cover in the wild.

Diet and Feeding Habits

  • Preferred Diet: A mix of high-quality flake foods, frozen or live foods like brine shrimp and daphnia.
  • Feeding Frequency: Feed small amounts 1-2 times daily.
  • Balanced Diet Tips: Variety is key. Include both plant-based and protein-rich foods for optimal health.

Unique Fact: Regular feeding of live foods can enhance the vibrant colors of Celestial Pearl Danios.

Celestial Pearl Danio in planted tank

Behavior and Temperament

  • General Behavior: Peaceful and active, they often swim in the middle and upper levels of the tank.
  • Compatibility: Best kept with other peaceful, small fish.
  • Stress Signs: Hiding excessively, loss of color, or reduced activity can indicate stress.

Unique Fact: These fish are known for their playful and curious nature, often engaging with their environment and tank mates.

Tank Mates

  • Suitable Tank Mates: Small, peaceful species like neon tetras, guppies, and other danios.
  • Species to Avoid: Larger, aggressive fish that may bully or stress them.
  • Introducing New Tank Mates: Do so gradually and monitor interactions closely.

Unique Fact: Celestial Pearl Danios can help create a dynamic and harmonious community tank with the right mix of species.


Breeding Celestial Pearl Danios can be a rewarding experience. Here’s a step-by-step guide:

  1. Breeding Conditions: Set up a separate breeding tank with plenty of plants and a gentle filter. Maintain optimal water parameters.
  2. Breeding Process: Introduce healthy, mature fish. They often spawn in the morning, scattering eggs among plants.
  3. Care for Fry: Remove adults after spawning. Feed fry with infusoria or liquid fry food until they can eat crushed flakes or micro-worms.

Unique Fact: Celestial Pearl Danios are known for their vibrant colouration, which becomes even more pronounced during breeding.

Celestial Pearl Danio Female

Common Diseases and Their Treatment

  • Common Diseases: Like all fish, they’re prone to diseases such as fin rot, ich, and fungal infections.
  • Prevention Measures: Maintain clean water, proper diet, and manage stress levels.
  • Treatment Options: Specific treatments depend on the disease but often include water changes, medication, and quarantine of affected fish.

Unique Fact: Early detection and treatment are key to successfully managing diseases in Celestial Pearl Danios.


  1. Are Celestial Pearl Danios Hardy? Yes, but they require stable water conditions.
  2. Does Celestial Pearl Danio School? They are shoaling fish, preferring to swim in groups.
  3. What Do Celestial Pearl Danios Eat? A varied diet of flake foods, live, and frozen foods.
  4. How Big Do Celestial Pearl Danios Get? Typically, 1-1.5 inches in length.
  5. Are Celestial Pearl Danios Shy or Outgoing? Generally outgoing, but can be shy in new environments.
  6. Making Celestial Pearl Danios Less Shy? Provide plenty of hiding places and a peaceful tank environment.
  7. Can Celestial Pearl Danios Breed in Presence of Dither Fish? Yes, but it’s more challenging and requires careful monitoring.

Unique Fact: Their schooling behaviour is not just for safety but also for social interaction.

Celestial Pearl Danio Pattern

Are Celestial Pearl Danio Right For Your Aquarium?

In this “Celestial Pearl Danio Care Guide,” we’ve covered everything from their unique features to detailed care instructions.

Remember, responsible fish care is key to ensuring these beautiful creatures lead a healthy, vibrant life in your aquarium.

Embrace the challenge of caring for Celestial Pearl Danios, and enjoy the beautiful and unique patterns they’ll bring to your home aquarium.

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