Duboulayi's Rainbowfish
Melanotaeniidae sp.
Duboulayi's Rainbowfish (Melanotaeniidae sp.) — Intermediate care, Peaceful, under Rainbowfish. Minimum tank in the app: 30 US gal min; aim for 64–82°F and pH 6.5–8. Duboulayi's Rainbowfish suits aquarists seeking an active, visually striking species for mid to upper tank zones.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Australia / New Guinea
- Australia & Oceania
Regional colours match the stocking calculator’s origin map.
Duboulayi's Rainbowfish Tank Setup
Create a spacious layout with ample swimming room complemented by plants and decorations that provide cover without obstructing swimming paths. Moderate water flow can mimic their natural habitat, and a substrate of fine sand or smooth gravel should facilitate foraging behaviors while enhancing aesthetics.
What Do Duboulayi's Rainbowfishs Eat?
These omnivores exhibit a moderate feeding speed, so offer a varied diet to minimize competition. High-quality flakes and occasional frozen or live foods can enhance their health and coloration, making it crucial to ensure all group members receive adequate nutrition without aggressive feeding frenzies.
Duboulayi's Rainbowfish Tank Mates
Ideal companions include similarly sized, peaceful species that occupy different tank levels, avoiding overly aggressive or fin-nipping fish. They prefer to be in groups of at least six, which mitigates stress from competition and territorial disputes, ensuring they feel secure in their social structure.
Are Duboulayi's Rainbowfishs Good for Beginners?
We rate this as intermediate. Budget time for testing, maintenance, and watching behaviour if the water looks fine but the fish do not. Aquarists often underestimate their social needs, keeping fewer than six, which can lead to stress and aggression. neglecting water quality parameters or tank size can result in stunted growth and health issues, impacting their vibrant colors and overall well-being.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.



