The dwarf rainbowfish is known under a number of common names including diamond rainbowfish, neon rainbowfish, Praecox rainbowfish, dwarf neon rainbowfish, peacock rainbowfish, and Teczanka neonowa. The species occupies small, slow-moving tributaries in regions with rainforest.
| Scientific name | Common Name | Size | Temperament |
| Melanotaenia praecox | Dwarf Rainbowfish | 50mm | Peaceful |
| Water Temperature | Water pH | Tank size | Diet |
| 25-28oC | 6-8 | 60 liter | Omnivores |