Introduction
The Celestial Pearl Danio (Danio margaritatus), also known as the Galaxy Rasbora, is a stunning nano fish prized for its vibrant colors and peaceful nature. This guide covers everything you need to know about Celestial Pearl Danio care, including the ideal Celestial Pearl Danio tank setup, diet, breeding, and water parameters.
Quick Facts
Common Name: Celestial Pearl Danio (Galaxy Rasbora)
Scientific Name: Danio margaritatus
Family: Cyprinidae
Lifespan: 3-5 years
Size: 0.75-1 inch (2-2.5 cm)
Tank Size: Minimum 10 gallons
Temperament: Peaceful, shoaling fish
Diet: Omnivore
Water Parameters: pH 6.5-7.5, Temp 72-78°F
Natural Habitat & Celestial Pearl Danio Behavior
The Celestial Pearl Danio originates from freshwater ponds in Myanmar, where they thrive in densely planted environments with slow-moving water. These fish prefer heavily vegetated tanks that mimic their natural habitat.
In an aquarium, Celestial Pearl Danios are active, shoaling fish that do best in groups of six or more. They are peaceful but may display minor territorial behaviors, especially among males during courtship displays.
Celestial Pearl Danio Tank Setup & Requirements
Tank Size & Setup
- Minimum Tank Size: 10 gallons (for a small group)
- Best Setup: A heavily planted tank with hiding spots and open swimming areas
- Substrate: Dark substrate enhances their colors and mimics their natural environment
Celestial Pearl Danio Water Parameters
- Temperature: 72-78°F (22-26°C)
- pH Level: 6.5-7.5
- Water Hardness: 5-12 dGH
- Filtration: Gentle filtration to avoid strong currents
- Lighting: Moderate to subdued lighting
Celestial Pearl Danio Tank Mates & Compatibility
Celestial Pearl Danios are peaceful and thrive in community aquariums with other small, non-aggressive fish. Ideal Celestial Pearl Danio tank mates include:
- Compatible Tank Mates: Chili Rasboras, Ember Tetras, Pygmy Corydoras, Sparkling Gouramis, Shrimp
- Avoid: Large or aggressive fish (Cichlids, Barbs, Betta Fish)
Celestial Pearl Danio Diet & Feeding
What They Eat in the Wild
The Celestial Pearl Danio diet consists of small insects, larvae, and plankton found in their native habitat.
Best Foods in Captivity
- Staple Diet: High-quality micro pellets and crushed flakes
- Treats: Live or frozen foods (baby brine shrimp, daphnia, bloodworms)
- Feeding Frequency: 1-2 times per day in small portions to avoid overfeeding
Celestial Pearl Danio Breeding
Breeding Tank Setup
- Tank Size: 5-10 gallons (dedicated breeding tank recommended)
- Water Conditions: Slightly warmer temperature, heavily planted with moss
- Temperature: 75-78°F (24-26°C)
- Decor: Java moss or fine-leaved plants for egg-laying
Breeding Process
- Spawning Behavior – Males display courtship dances and bright colors to attract females.
- Egg-Laying & Fertilization – Females scatter eggs among dense plants.
- Egg & Fry Care – Remove adults after spawning to prevent egg predation.
Fry Care
- First Foods: Infusoria or powdered fry food
- Growth Stages: Introduce baby brine shrimp as they develop
- Tank Conditions: Stable, clean water is essential for fry survival
Common Health Issues & Prevention
Common Diseases
| Disease | Symptoms | Treatment |
|---|---|---|
| Ich (White Spot Disease) | White cysts on body and fins | Increase temperature, use anti-parasitic meds |
| Fin Rot | Frayed, discolored fins | Improve water quality, use antibacterial meds |
| Fungal Infections | Cotton-like growths on body | Anti-fungal medication, water changes |
Prevention Tips
- Maintain Clean Water: Regular water changes (25% weekly)
- Quarantine New Fish: Prevent disease spread
- Avoid Overfeeding: Reduces waste buildup and improves water quality
FAQs
Q: How many Celestial Pearl Danios should be kept together?
A: A group of at least six is recommended to reduce stress and encourage natural behaviors.
Q: Can Celestial Pearl Danios live in a community tank?
A: Yes, they thrive in peaceful community tanks with small, non-aggressive species.
Q: Do Celestial Pearl Danios need an air pump?
A: No, but good filtration and aeration help maintain optimal water quality.
Conclusion
The Celestial Pearl Danio is a visually stunning and low-maintenance fish that brings activity and color to nano aquariums. By ensuring the right Celestial Pearl Danio tank setup, water conditions, and diet, you can enjoy their beauty and peaceful nature for years to come.
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