Overview
The Phoenix Rasbora (Boraras merah) is a intermediate freshwater species known for its deep red, black markings coloration. Deep red nano fish. Mid.
Origin & Appearance
Origin: Borneo.
Colors: Deep Red, Black markings.
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 2.0 x 0.4 x 0.6.
Sexual Dimorphism: Subtle; males deeper red.
Tank & Water Requirements
| Min Tank Size | 5 gallons |
| Temperature | 72–82°F |
| pH Range | 4.5–7 |
| Water Hardness (GH) | 1-6 |
| Bioload | very-high |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Mid |
Behavior & Activity
Tiny mid-water hoverer; gentle drift in planted nano tanks; minimal movement with subtle fin adjustments
Speed: 35/100Aggression: 1/10diurnalSchooling (10+)
Breeding
Difficult; micro egg scatterer
Common Diseases
💊 Sensitive to water swings
Expert Notes
Deep red nano fish