
Source: Wikimedia Commons
Dario dario
A gem-like tiny fish with beautiful red coloration. Known as a micro predator.
The scarlet badis (Dario dario) is an extraordinarily small freshwater fish native to the Brahmaputra River drainage in India, classified as one of the smallest known percoid vertebrates. Males reach only 1.5–2 cm; females are even smaller at approximately 1 cm. Despite their tiny size, males display breathtaking coloration — vivid alternating red and iridescent blue vertical bands across the body, earning them a devoted following among nano fish enthusiasts. Community tank keeping is problematic: their tiny size makes them vulnerable to outcompetition and predation by virtually any other fish. A species-only setup or a tank with dwarf shrimp and similarly sized micro fish is strongly recommended. The most significant challenge is feeding: many individuals stubbornly refuse prepared foods, accepting only live or frozen offerings such as bloodworms, brine shrimp nauplii, and daphnia. Breeding occurs under plant leaves or in small crevices, with males guarding eggs. Their jewel-like beauty at microscopic scale attracts passionate dedicated keepers worldwide.
Source: Wikipedia (CC BY-SA 4.0)
The Scarlet Badis lives 3-5 years.
The Scarlet Badis grows to 1.5-2cm.
The ideal water temperature for the Scarlet Badis is 18〜26℃.
Water conditions of pH 6.5–7.5 at 22–26°C are suitable.
Origin
Brahmaputra River drainage, India
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Dario dario is not listed on CITES.
Sources: Seriously Fish / CITES Appendices (Checklist)
Regulations may change. Always verify the latest information with the relevant authorities.
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Lifespan
3-5 years
Size
1.5-2cm
Temperature
22〜28℃
Frozen food, Live food
Takes dry food poorly, so feed mainly frozen food
So tiny that a species-only tank is ideal
Males fight fiercely over territory
Prefers a densely planted setup
So small that a nano tank suits observation
Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.
The ideal temperature for Scarlet Badis is 18〜26℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Scarlet Badis is 3-5 years. With proper care and nutrition, they can live a long and healthy life.
Scarlet Badis typically reaches 1.5-2cm as an adult. Size may vary depending on care conditions and individual genetics.
Scarlet Badis feeds on: Frozen food, Live food. Aim for a balanced diet with appropriate feeding frequency.
The price of Scarlet Badis varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: August 31, 2026