
Source: Wikimedia Commons
Danio margaritatus
A tiny fish with jewel-like body scattered with white pearl patterns. A gem for planted tanks.
The celestial pearl danio (Danio margaritatus), also marketed as the galaxy rasbora, is an exceptionally small danionid fish native to a limited range of small ponds and streams in Shan State, Myanmar, near Inle Lake, at elevations exceeding 1,000 m. Described as a new species in 2006, it immediately caused a sensation in the aquarium world with its extraordinary appearance: a deep navy-blue body peppered with pearl-white to yellow spots, with vivid orange-red striped fins — an appearance so stunning it earned the 'galaxy' nickname. Its diminutive size of approximately 2 cm makes it perfect for nano aquariums. Following initial discovery, concerns arose about collection-driven population crashes, but successful captive breeding has since stabilized the hobby supply. Celestial pearl danios prefer densely planted aquariums — fine-leaved plants and moss provide essential cover — and thrive in slightly acidic to neutral water (pH 6.5–7.5) at 20–26°C. Their highland origins mean they dislike high temperatures; sustained heat above 26°C causes stress. Breeding on clumps of java moss or similar plants is achievable for patient hobbyists.
Source: Wikipedia (CC BY-SA 4.0)
Origin
Shan State, Myanmar (highland pools near Inle Lake)
Lifespan
3-5 years
Size
2-3cm
Temperature
22〜28℃
Artificial feed, Frozen food
Sources: Seriously Fish
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Sources: FishBase / Seriously Fish / CITES Appendices (Checklist)
Regulations may change. Always verify the latest information with the relevant authorities.
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超小型のため小型水槽でも飼育可能
水草が茂った環境を好む
臆病なため隠れ場所を多く
群れで飼育すると落ち着く
オス同士はフレアリングする
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Celestial Pearl Danio is 22〜28℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Celestial Pearl Danio is 3-5 years. With proper care and nutrition, they can live a long and healthy life.
Celestial Pearl Danio typically reaches 2-3cm as an adult. Size may vary depending on care conditions and individual genetics.
Celestial Pearl Danio feeds on: Artificial feed, Frozen food. Aim for a balanced diet with appropriate feeding frequency.
The price of Celestial Pearl Danio varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: June 23, 2026