Neon Blue Rasbora (Sundadanio axelrodi "Blue") – A Jewel-Toned Nano Wonder
The Neon Blue Rasbora is a brilliantly colored micro fish that captivates with its glowing blue body and subtle red highlights. Perfect for nano and heavily planted aquariums, this tiny species thrives in calm, tannin-rich environments that replicate the soft, acidic blackwater streams of Southeast Asia.
Despite its size, the Neon Blue Rasbora displays lively schooling behavior and radiates vibrant color when kept in groups, making it a favorite for aquascapers and nano tank enthusiasts alike.
Key Features:
-
Latin Name: Sundadanio axelrodi "Blue"
-
Common Name: Neon Blue Rasbora
-
Coloration: Iridescent electric blue body with hints of red near the fins
-
Temperament: Peaceful and shy, best in groups
-
Size: Up to 0.8 inches
-
Tank Requirements: Minimum 5 gallons; soft, acidic water with dense planting and gentle flow
-
Diet: Omnivorous—micro pellets, crushed flakes, baby brine shrimp, and daphnia
-
Compatibility: Ideal with other micro species; keep in schools of 6 or more
Tips:
-
Use a dark substrate and tannin-rich water to enhance their neon colors.
-
Keep lighting soft to reduce stress and highlight their iridescence.
-
Avoid large or active tankmates that may outcompete them for food.
-
Ensure stable water parameters—this species is sensitive to fluctuations.
Why Choose This Fish?
The Neon Blue Rasbora offers striking coloration and peaceful schooling behavior in a compact size, perfect for nano aquariums. Its glowing blue shimmer brings a splash of elegance and motion to planted tanks, making it an excellent choice for aquarists seeking beauty, balance, and grace in miniature form.