Congo Tetra — Fish Profile
Phenacogrammus interruptus
Quick Specs
| Adult Size: | 3.0" |
| Temperament: | peaceful |
| Care Level: | intermediate |
| Min Tank Size: | 30 gallons |
| Temperature: | 73-82°F |
| pH Range: | 6.0-7.5 |
| Diet: | omnivore |
| Origin: | Central Africa (Congo River Basin) |
| Lifespan: | 5-8 years |
Overview
Congo Tetras are one of the most spectacular African tetras, with iridescent blue, gold, and red-orange coloration that shifts depending on the light angle. Males develop elongated, flowing dorsal and caudal fins. They are larger than most tetras and need more swimming space. Keep in groups of 6+ for the best schooling display and reduced skittishness.
Care Guide for Congo Tetra
Tank Setup
Congo Tetra requires a minimum tank size of 30 gallons. Maintain water temperature between 73°F and 82°F, with a pH range of 6.0 to 7.5. A properly sized tank with adequate filtration and regular water changes is essential for long-term health. When housing Congo Tetra with other species, always choose a tank size that accommodates the most demanding fish in the community.
Feeding
Congo Tetra is a omnivore feeder. Provide a varied diet appropriate for omnivore species to ensure optimal health and coloration. Feed small portions 2–3 times daily, and remove uneaten food after a few minutes to maintain water quality.
Temperament & Compatibility
This species is classified as peaceful. Congo Tetra reaches an adult size of 3.0 inches and has a care level of intermediate. Always research compatibility before adding new fish to an established aquarium. Individual temperament can vary, so monitor new introductions closely for the first 48 hours.
Origin & Lifespan
Congo Tetra originates from Central Africa (Congo River Basin) and has an expected lifespan of 5-8 years when kept in proper water conditions with appropriate tank mates and diet.
Compatible Tank Mates
🟢 Good Tank Mates
🟡 Caution Tank Mates
🔴 Risky Tank Mates
Compatibility Results for Congo Tetra
All 69 compatibility checks involving Congo Tetra:
Recommended for Congo Tetra
Omega One Freshwater Flakes — $9.99High-quality flake food for large tetras
Expert Care Tips for Congo Tetra
- Mid-size tank: Congo Tetra needs 30+ gallons. Choose a tank at least 2× as long as the fish's adult size (3.0") for adequate swimming room.
- Warm-water species: Congo Tetra prefers 73–82°F. Use a reliable submersible heater with a thermostat — avoid temperature swings above 2°F per day.
- Adaptable pH range: Congo Tetra accepts pH 6.0–7.5. Most tap water falls within this range, but always test and acclimate slowly.
- Peaceful community fish: Congo Tetra works well in community tanks. Still, avoid housing with fish large enough to eat them — a 3.0" fish is vulnerable to anything with a mouth bigger than 2×.
- Acclimation: Always drip-acclimate Congo Tetra over 30–45 minutes. Match temperature and pH gradually to prevent osmotic shock.