Congo Tetra (Phenacogrammus interruptus) - Live Fish

The Congo Tetra (Phenacogrammus interruptus) is a striking and popular species of freshwater fish, native to the Congo River Basin in Central Africa. Known for their iridescent, shimmering coloration and peaceful nature, Congo Tetras are a favorite among aquarium hobbyists looking for a visually stunning addition to their tanks.

Physical Description:

• Size: Congo Tetras are relatively large tetras compared to others, reaching lengths of 2.5 to 3 inches (6.5 to 7.5 cm) in captivity. In the wild, they may grow slightly larger.
• Coloration: They are known for their iridescent body, which shimmers in shades of blue, green, and silver. Their fins are often brightly colored, with the males exhibiting more vivid hues than the females, especially during breeding periods. The males may have more pronounced orange or red tones in their fins and a more elongated fin structure.
• Lifespan: Congo Tetras can live up to 5 to 7 years in captivity when provided with proper care.

Behavior and Social Needs:

• Temperament: Congo Tetras are peaceful and social, making them great additions to a community tank. They are non-aggressive but may display some territorial behavior during breeding.
• Schooling: Like most tetras, Congo Tetras feel most secure when kept in schools of 6 or more individuals. A group will display more natural behaviors and vibrant colors. It’s best to keep them in larger groups for their well-being.
• Activity: These tetras are relatively active, but they tend to swim in the middle to upper regions of the tank. They’re not as hyperactive as some other species, but they do enjoy exploring their environment.

Habitat and Water Conditions:

• Water Parameters: Congo Tetras thrive in slightly acidic to neutral water (pH 6.0–7.5). They prefer water temperatures between 74°F to 80°F (23°C to 27°C), and moderate hardness (4–12 dGH). It’s essential to maintain stable water parameters for their health.
• Tank Setup: Congo Tetras enjoy well-planted aquariums with plenty of swimming space. A planted tank with some driftwood and rocks will mimic their natural environment. These fish also appreciate darker water conditions and subdued lighting, which brings out their beautiful colors. Floating plants are a good addition for providing some shaded areas.

Diet:

• Omnivorous: Congo Tetras are omnivores and will eat a wide variety of foods. In captivity, they should be offered a balanced diet that includes high-quality flakes, pellets, live foods (such as brine shrimp or bloodworms), and frozen foods. They may also nibble on vegetable matter like algae wafers or blanched spinach.
• Varied Diet: It’s important to feed them a varied diet to ensure they get all the necessary nutrients for optimal health and coloration.

Breeding:

• Egg Scattering: Congo Tetras are egg scatterers, and breeding them in captivity can be challenging but rewarding. They require soft, slightly acidic water for successful spawning.
• Breeding Tank: A separate breeding tank with fine-leaved plants or spawning mops is ideal. After spawning, it is best to remove the adults, as they may eat the eggs. The eggs will hatch in about 24–48 hours, and the fry should be fed infusoria or specialized fry food until they grow large enough to accept normal foods.
• Sexual Dimorphism: Males typically have more vibrant colors and longer fins compared to females, which is evident during the breeding season.

Care Tips:

• Water Quality: Congo Tetras are fairly hardy but benefit from clean, well-maintained water. Regular water changes are essential for their well-being. They are sensitive to poor water conditions, so be sure to monitor ammonia and nitrate levels closely.
• Tankmates: Due to their peaceful nature, Congo Tetras make great tankmates for other peaceful community species. They do well with other tetras, rasboras, barbs, and small cichlids. Avoid keeping them with aggressive fish, as they may get stressed.
• Lighting: They prefer slightly dim lighting, so it’s a good idea to incorporate floating plants or subdued lighting in their tank.

Summary:

The Congo Tetra is a beautiful, peaceful, and active fish that makes a striking addition to any community aquarium. With their stunning coloration and easygoing nature, they thrive in schools and do best in well-planted tanks with stable water conditions. Although breeding can be challenging, Congo Tetras are generally easy to care for and will thrive in a well-maintained, peaceful environment.