🐟 Neon Dwarf Rainbowfish Melanotaenia praecox


The Neon Dwarf Rainbowfish (Melanotaenia praecox) is a easy-care, peaceful species from Mamberamo basin, West Papua. Adults reach roughly 2.5", so plan on a minimum tank of 20 gallons. Keep the water between 73–82°F with a pH of 6.5–7.5. This is a schooling fish — keep a group of at least 6 so it feels secure and colors up. As an omnivore, it does best on a varied diet appropriate to its feeding style.
At a glance
| Adult size | 2.5" |
|---|---|
| Minimum tank | 20 gallons |
| Temperature | 73–82°F |
| pH | 6.5–7.5 |
| Temperament | Peaceful |
| Schooling | Yes — group of 6+ |
| Diet | Omnivore |
| Care level | Easy |
| Origin | Mamberamo basin, West Papua |