Advanced30 L
Galaxy rasbora nano (30 L)
Jewel-like dots: silver speckles on a dark backdrop.
Celestial pearl danio (galaxy rasbora) is one of the most beautiful nano fish. Just 2 cm long, but with constellation colours.
Dark background, minimal cover, still water. Only conspecifics + shrimp — never large tankmates.
Dimensions
40×25×30 cm
Temperature
22–26°C
pH
6.5–7.5
gH
5–12 °dGH
Setup time
5 wks
Budget
≈ $250
Total fish
12
Fish (12)
- Galaxy Rasbora× 12
Plants (5)
- Java Fern× 2
- Dwarf Anubias× 3
Invertebrates (10)
- Cherry Shrimp× 10
Setup Checklist
Essential gear and water prep needed before adding fish
0 of 10 ready
- ≈ $22Sponge filter (air-driven)Essential
- ≈ $22Air pumpCare
- ≈ $18
- ≈ $5ThermometerCare
- ≈ $120
- ≈ $35Active aquasoil (ADA Amazonia)Base
- ≈ $10Dark film backgroundBase
- ≈ $12Water conditioner (dechlorinator)Essential
Seachem Prime or Tetra AquaSafe — instantly detoxifies chlorine, chloramine, and heavy metals
- ≈ $25Liquid drop test kit (pH, NH₃/NH₄, NO₂, NO₃)Recommended
API Freshwater Master Test Kit or liquid drop tests to monitor nitrogen cycle
- ≈ $15Fish net & gravel vacuum siphonCare
Soft fish net matched to fish size + gravel vacuum siphon for weekly 20–30% water changes
Decor
- Natural driftwood (mangrove or mopani)× 2
- Catappa (Indian almond) leaves× 4
- Natural rock (Seiryu / Dragon Stone)× 3
Tips & gotchas
- Sponge filter only — flow-through filters suck in fry and adults.
- Feed micro foods (cyclops, brine shrimp nauplii).
- Minimal current, near-still water.
- 20 % water changes every 2 weeks, gently.