The Congo tetra (Phenacogrammus interruptus) is a popular freshwater fish among aquarium enthusiasts. It is native to the Congo River Basin in Central Africa and is well-known for its vibrant, shimmering colors and peaceful temperament.
Key Characteristics:
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Size: Adults typically grow to about 8–10 cm (3–4 inches) in length.
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Coloration: They exhibit iridescent colors, often shimmering in shades of blue, green, orange, and violet. Males are more colorful and have longer, flowing fins compared to females.
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Body Shape: Congo tetras have an elongated body with a slightly compressed shape and distinctively large, fan-like dorsal and caudal fins.
Habitat and Behavior:
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Natural Habitat: They inhabit slow-moving streams and rivers in the Congo Basin, preferring soft, slightly acidic to neutral waters with plenty of vegetation.
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Behavior: They are schooling fish, meaning they thrive in groups of at least 6–8 individuals. Their behavior is peaceful, making them suitable for community aquariums.
Aquarium Care:
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Tank Size: A minimum of 30 gallons is recommended for a small school, with larger tanks being ideal.
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Water Parameters:
- Temperature: 23–27°C (73–81°F)
- pH: 6.0–7.5
- Hardness: Soft to moderate
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Diet: They are omnivorous and will eat a varied diet of high-quality flake food, frozen or live foods (e.g., brine shrimp, daphnia), and vegetable-based foods.
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Tank Setup: Provide plants, open swimming space, and subdued lighting to mimic their natural habitat.
Breeding:
Congo tetras are egg scatterers, and breeding them requires a separate tank with fine-leaved plants or a spawning mop to collect eggs. They require specific water conditions and minimal disturbance for successful reproduction.
