Overview
The Congo Tetra (Phenacogrammus interruptus) is a intermediate freshwater species known for its iridescent rainbow (blue, gold, orange) coloration. Iridescent rainbow colors. Mid to Upper-Mid.
Origin & Appearance
Origin: Congo River Basin.
Colors: Iridescent Rainbow (blue, gold, orange).
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 8.5 x 1.5 x 2.5.
Sexual Dimorphism: Strong; males larger with extended fins and brighter iridescence.
Tank & Water Requirements
| Min Tank Size | 30 gallons |
| Temperature | 73–82°F |
| pH Range | 6–7.5 |
| Water Hardness (GH) | 3-12 |
| Bioload | medium |
| Oxygen Demand | medium |
| Plant Safe | mostly |
| Aquarium Position | Mid to Upper-Mid |
Behavior & Activity
Active mid-to-upper swimmer; flowing iridescent movement; males display with extended finnage; needs open swimming lanes
Speed: 50/100Aggression: 2/10diurnalSchooling (6+)
Breeding
Moderate; egg scatterer
Common Diseases
💊 Ich💊 sensitive to water quality
Expert Notes
Iridescent rainbow colors
Compatible Tank Mates
✓ corydoras catfish✓ bristlenose pleco✓ harlequin rasbora✓ kuhli loach✓ dwarf gourami✓ angelfish✓ rummy nose tetra