Description

Species Background

The Celestial Pearl Danio originates from shallow, vegetation-dense ponds in Myanmar. Discovered in 2006, it quickly became one of the most sought-after nano fish in the aquarium hobby due to its exceptional coloration and manageable size.

Wild habitats consist of still or slow-moving water with dense plant growth and soft substrates. Nearly all specimens available today are tank-bred and adapt well to stable home aquarium conditions.

Behavior and Temperament

Celestial Pearl Danios are peaceful nano schooling fish with mild territorial displays between males.

• Best kept in groups of 8 or more
• Males may posture but rarely injure one another
• Naturally shy in sparsely decorated tanks

They prefer planted environments where they can weave through cover. In well-structured aquascapes, they display confidently and show stronger coloration.

Adult Size

Adults typically reach 1 inch in length.

Most specimens are sold between 0.5–0.75 inches.

Water Parameters

Temperature: 72–78°F
Safe broader tolerance: 70–80°F

pH: 6.5–8.0
GH: 4–15 dGH
KH: 2–10 dKH

Tank-bred specimens tolerate moderately hard and slightly alkaline water when stable. Stability is more important than chasing a specific number.

Diet

Omnivorous micropredators.

Primary diet should include:
• Quality micro pellets
• Crushed flake
• Frozen cyclops
• Baby brine shrimp
• Daphnia

Food size should be small due to their compact mouths.

Tank Requirements

Minimum tank size: 10 gallons

Larger tanks are recommended for proper schooling behavior.

Aquascape preferences:
• Heavy plant cover
• Fine substrate
• Gentle to moderate flow
• Established biological filtration

They thrive in mature aquariums with stable parameters.

Compatibility

They coexist well with:
• Other peaceful nano fish
• Small rasboras
• Small Corydoras species
• Dwarf shrimp (fry may be eaten)

Avoid housing with larger or aggressive species.

Why They’re Popular

These fish are popular because they combine striking coloration with nano-friendly sizing.

• Metallic blue bodies with pearl-like spotting
• Bright red fins on males
• Ideal for planted aquascapes
• Suitable for smaller aquariums