Description
Congo Tetra – Phenacogrammus interruptus
Introduction:
The Congo Tetra (Phenacogrammus interruptus) is a dazzling and peaceful freshwater species that adds brilliant color and dynamic movement to aquariums. Known for its shimmering, iridescent scales that reflect light in a rainbow of colors, this tetra species has become a popular choice for hobbyists. Reaching a size range of 2.5 to 3 inches (6.3 to 7.6 cm), Congo Tetras are ideal for community tanks where they can thrive and display their natural beauty in schools.
1. Natural Habitat and Behavior
- Natural Habitat: Native to the Congo River Basin in Africa, the Congo Tetra inhabits slow-moving streams and rivers with dense plant life and soft, slightly acidic waters.
- Behavior: Congo Tetras are peaceful, active swimmers that enjoy being part of a school. They are best kept in groups of 6 or more individuals to allow for their natural schooling behavior. While peaceful, they can be shy and may hide in plants or behind decorations if not kept in a suitable environment.
2. Aquarium Setup
- Tank Size: A minimum of 20 gallons (75 liters) is recommended for a small group of Congo Tetras. A larger tank will allow for more fish and space for other peaceful species.
- Substrate: Congo Tetras are not picky about substrate but prefer fine gravel, sand, or smooth pebbles. The substrate should be gentle on their delicate fins.
- Decor: These fish prefer a well-planted tank with plenty of hiding spots. Use plants like java fern, anubias, or amazon sword to create a lush environment, and include driftwood and rocks to simulate their natural habitat.
- Water Conditions: Congo Tetras require slightly acidic to neutral water with a pH range of 6.0 to 7.5, and the water temperature should be between 72°F to 82°F (22°C to 28°C). They prefer soft water but can tolerate slightly harder water if it is within the acceptable pH range.
- Lighting: Moderate lighting is best. A slightly dimmer tank with soft lighting enhances the Congo Tetra’s natural coloration and allows them to feel secure.
3. Diet and Feeding
- Diet: Congo Tetras are omnivorous and will accept a variety of foods. Offer high-quality flake or pellet foods as a staple, supplemented with live or frozen foods such as daphnia, brine shrimp, and bloodworms. They also enjoy plant-based foods like spirulina or blanched vegetables.
- Feeding Schedule: Feed 1-2 times a day, offering only as much food as the fish can consume in a few minutes to avoid overfeeding and water quality issues.
4. Compatibility with Other Fish
- Compatible Species: Congo Tetras are peaceful and can be kept with other non-aggressive, similarly sized fish. Ideal tank mates include other tetras, rasboras, peaceful cichlids, and small catfish.
- Incompatible Species: Avoid aggressive or large predatory fish, as they may stress or eat the Congo Tetras. Additionally, fin-nipping species should be avoided as they can cause stress to the delicate tetras.
5. Common Challenges and Tips
- Shyness: Congo Tetras can be shy and may hide if kept in a tank with too few companions or too much activity. Keeping them in schools of at least 6 fish helps reduce stress and encourages their natural behavior.
- Water Quality: Congo Tetras are sensitive to poor water quality. Regular water changes (around 25% weekly) and a good filtration system are essential for keeping them healthy.
- Fin Nipping: While they are not prone to fin-nipping themselves, they can be stressed by overly aggressive fish. Ensure your tank mates are calm and not overly territorial.
Conclusion:
The Congo Tetra (Phenacogrammus interruptus) is a beautiful and active fish that thrives in well-maintained, peaceful community tanks. With their iridescent coloration and schooling behavior, they can be a captivating addition to any freshwater aquarium. By providing a suitable environment with clean, slightly acidic water and a well-balanced diet, Congo Tetras will flourish, offering their bright, shimmering colors for years to come.
