Melanotaenia praecox
Neon Dwarf Rainbowfish
Praecox Rainbows are active, schooling fish that stay smaller than most other rainbowfish. They add a lot of shimmer and movement to a community tank.
Ensure perfect water for Neon Dwarf Rainbowfish ➔
Perfect for Aquaware Monitoring
🐟
Robust & Hardy
Forgives minor beginner mistakes. However, note that these animals only show their full coloration and vitality with constant water parameters.
Temperature
22 - 28 °C
72 - 82 °F
pH Value
6.5 - 8.0 pH
Acidity Level
Mineral Content (TDS)
100 - 300 ppm
✅ Ideal for Aquaware Sensor
Did you know?
In the right light, their entire body flashes a neon-blue color.
Aquaware Pro Tip
They are jumpers, so a secure lid is essential.
Natural Habitat
Fast-flowing jungle streams and tributaries in Papua, Indonesia.
Diet & Nutrition
Omnivore. Most flakes, granules, and small frozen foods.
Behavior
Peaceful and very active. Needs plenty of horizontal swimming space.
Max Size
5-6 cm (2-2.5 inches)
Average adult size
Lifespan
3-5 years
Years with proper care
Swim Zone
Preferred tank region
Top
Mid 🐟
Bottom
Min. Tank
80 Liters
Recommended minimum size
Social
6 Fish
Schooling fish (Minimum!)
Add. Space
10 L
Required per additional fish
(3 Gallons)
(3 Gallons)
💧 +10 Liters needed