Praecox Rainbowfish – Neon Rainbowfish – Adult
Add a stunning splash of shimmering color to your aquarium with Adult Praecox Rainbowfish!
The Praecox Rainbowfish (Melanotaenia praecox), also known as the Neon Dwarf Rainbowfish, is a beautiful, peaceful freshwater tropical fish known for its brilliant metallic blue body and vibrant red or yellow fins. These active, eye-catching fish bring constant movement and color to any community aquarium.
Our Adult Praecox Rainbowfish offer mature coloration, making them an excellent choice for hobbyists looking for an instant display of vibrant color.
Key Features
Scientific Name: Melanotaenia praecox
Common Names: Praecox Rainbowfish, Neon Rainbowfish, Dwarf Neon Rainbowfish
Size: Adults typically reach 2–3 inches
Temperament: Peaceful, active, and social
Minimum Tank Size: 20 gallons long or larger; 30+ gallons recommended for a group
Water Temperature: 75–82°F
pH Range: 6.5–8.0
Diet: Omnivore – quality flakes, pellets, frozen, and live foods
Care Level: Easy to moderate
Aquarium Care & Compatibility
Praecox Rainbowfish thrive in well-maintained, planted aquariums with plenty of open swimming space. They are schooling fish and display their best colors and natural behaviors when kept in groups of six or more.
Excellent tank mates include peaceful tetras, rasboras, Corydoras catfish, peaceful gouramis, and other similarly sized community fish.
Why Choose Adult Praecox Rainbowfish?
Brilliant metallic blue coloration with colorful fins
Mature fish with more developed coloration
Peaceful and ideal for community aquariums
Active schooling behavior
Beautiful addition to planted freshwater tanks
Live Arrival Guarantee: We take great care in packaging our fish for safe arrival. In the unlikely event of a DOA, please contact us with clear photos of the fish in the unopened shipping bag within 2 hours of delivery, in accordance with our Live Arrival Guarantee policy.
Bring home the incredible beauty of Adult Praecox Neon Rainbowfish from The Mad Jellyfish!