Overview
The Rummy-Nose Tetra (Hemigrammus rhodostomus) is a intermediate freshwater species known for its silver, red (head), black/white (tail) coloration. Red nose indicates water quality. Mid.
Origin & Appearance
Origin: South America.
Colors: Silver, Red (head), Black/White (tail).
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 5.0 x 0.9 x 1.5.
Sexual Dimorphism: Minimal.
Tank & Water Requirements
| Min Tank Size | 20 gallons |
| Temperature | 75–82°F |
| pH Range | 5.5–7 |
| Water Hardness (GH) | 2-8 |
| Bioload | low |
| Oxygen Demand | medium |
| Plant Safe | yes |
| Aquarium Position | Mid |
Behavior & Activity
Extremely tight schooling; one of the most coordinated schoolers; sharp synchronized turns; constant motion as a unified group
Speed: 42/100Aggression: 1/10diurnalSchooling (10+)
Breeding
Difficult; egg scatterer
Common Diseases
💊 Ich💊 red nose fades = stress indicator
Expert Notes
Red nose indicates water quality
Compatible Tank Mates
✓ neon tetra✓ cardinal tetra✓ corydoras catfish✓ harlequin rasbora✓ otocinclus✓ angelfish✓ dwarf gourami✓ cherry shrimp✓ bristlenose pleco✓ kuhli loach