Origins and Classification
- Scientific Name: Phenacogrammus interruptus
- Family: Alestidae (African Tetras)
- Origin: Native to the Congo River Basin in Central Africa, where they inhabit slow-moving, soft, and acidic blackwater streams surrounded by lush vegetation.
- Popularity: The Congo Tetra is highly prized for its iridescent coloration, flowing fins, and peaceful schooling behavior, making it a standout choice for large, planted community aquariums.
🎨 Appearance
- Color: Iridescent blue, violet, and gold hues along the body with orange to red tones near the tail; males are especially colorful with extended fins.
- Structure:
- Long, slightly compressed body.
- Males have elongated dorsal and caudal fins with shimmering metallic reflections.
- Females are smaller with subtler coloration.
- Size: Medium-sized — typically 3–3.5 inches (8–9 cm).
- Lifespan: 3–5 years, sometimes longer in optimal tank conditions.
🏡 Tank Requirements
- Tank Size: Minimum 30 gallons for a small group (ideally 6 or more).
- Water Parameters:
- Temperature: 75–82°F (24–28°C)
- pH: 6.0–7.5
- Hardness: 3–12 dGH
- Lighting: Moderate to subdued lighting enhances their iridescent glow.
- Substrate: Dark sand or fine gravel to accentuate colors.
- Habitat Setup:
- Add driftwood, plants, and floating vegetation to mimic their natural environment.
- Provide open swimming space in the middle of the tank.
- Use gentle filtration with soft water for best coloration and fin health.
