Freshwater Aquarium Necklace Charm
$24.99
Dwarf Neon Rainbowfish
Melanotaenia praecox
Reviewed for accuracy · Last updated Dec 20, 2025, 5:15 PM
Energetic schooling rainbowfish that thrives in open swimming space; mostly peaceful but lively.
Key Information
Water Type
Freshwater
Temperament
Peaceful
Care Level
Easy
Minimum Tank Size
32 gal (120 L)
Maximum Size
3 in (8 cm)
Lifespan
4–6 years
Diet
Omnivore
Migration
Resident
Dwarf Neon Rainbowfish Tank Setup and Care
They require clean well-oxygenated water. Bright lighting enhances iridescence. Plants provide shelter. Open space is necessary for schooling.
A group of six or more is ideal. Mixed sexes display best colors. Stable temperature prevents stress. Regular maintenance is essential.
Hardscape with rocks works well. Provide moderate flow. Avoid extreme pH. Consistency is key.
Driftwood and ferns are beneficial. Floating plants soften the lighting. Avoid overcrowding. Ensure good filtration.
Dwarf Neon Rainbowfish Water Parameters
75–82 °F (24–28 °C)
6.5–7.5
6–15 dGH
1.000–1.005 SG
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