Overview
The Rummy Nose Tetra (Hemigrammus rhodostomus) is a freshwater fish from the family Characidae. It thrives at temperatures of 24–26 °C with a pH of 5.5–6.5, requiring a minimum tank size of 80 litres. Sensitive tetra prized for its bright red nose and tight schooling behavior. The red blush fades when stressed — a useful water quality indicator.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Characidae |
| Genus | Hemigrammus |
| Species | Hemigrammus rhodostomus |
| Water type | freshwater |
Natural Habitat
Appearance
Behavior
The red blush fades when stressed — a useful water quality indicator
| Trait | Value |
|---|---|
| Temperament | Sensitive tetra prized for its bright red nose and tight schooling behavior |
| Schooling | Yes |
| Activity level | active |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 24–26°C (75–79°F) | Use a reliable adjustable heater |
| pH | 5.5–6.5 | Avoid sudden swings |
| Hardness (GH) | soft dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <10 ppm | Manage through regular partial water changes |
| Min. tank | 80L (21 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- Rummy Nose Tetras school so tightly they appear to move as one organism
📋 Full Care Guide
Ready to set up a tank for your Rummy Nose Tetra? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Rummy Nose Tetra Care Guide →Related Species
Related Species & Guides
This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.