How long do Congo Tetras live?
Congo Tetras live about 3-4 years with good care. Stable warm water and a varied diet keep males' colors at their best.
What do Congo Tetras eat?
They accept flake, pellets, and frozen/live foods like bloodworms, brine shrimp and daphnia. The mistake is overfeeding and relying on flakes alone; a varied diet supports their fin condition.
Tank size and water parameters
A 30-gallon (115 L) tank or larger suits a school of 6-8. Target 73-81°F (23-27°C), pH 6.0-7.5, soft to moderate water, zero ammonia and nitrite, nitrate under 20 ppm. Keep in groups of 6+; plants plus open swimming space show them best.
Common mistakes with Congo Tetras
Common errors: too small a tank for an active 3-inch schooler; hard, alkaline water that dulls them; and fin-nipping tank mates that shred their long fins — choose gentle companions.
Beginner mistakes to avoid
- Under-sizing the tank — active 3-inch fish need 30+ gallons for a school.
- Hard, alkaline water — they prefer soft, slightly acidic conditions.
- Fin-nipping tank mates — long fins are easily damaged.
- Overfeeding a flake-only diet — vary foods and keep portions moderate.