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Neon Rasbora
Sundadanio axelrodi
Family: Cyprinidae
📍 Mekong Basin, Southeast Asia
Sundadanio axelrodi, the Neon Rasbora (also called Axelrod's Rasbora), is a stunning nano fish from Borneo and Sumatra whose body radiates intense neon-blue to blue-green iridescence along its flanks. At just 2 cm it ranks among the smallest cyprinids, requiring soft blackwater conditions similar to its peat swamp habitat. Its striking colour and active schooling behaviour make it a prized centrepiece in nano planted aquariums.
Keeping this species
- diet
- Carnivore – micro worms, baby brine shrimp, micro pellets
- lifespan
- 3–5 years
- max size
- 2 cm (0.8 in)
- tank size
- 5 gallons minimum
- school size
- 10+
- temperament
- Peaceful, schooling; species tank or nano community only
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Tips from the community 💡
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Water it likes
- ph
- 4.0–6.5
- ammonia
- 0 ppm
- nitrate
- <10 ppm
- hardness
- 0–4 dGH
- temperature
- 72–79°F (22–26°C)
Natural Habitat Temperature
75°F — 81°F seasonal range · (Jan low, Apr high)