African Knifefish – Xenomystus nigri | Wild-caught | Peaceful classic with an elegant swimming style

The African knifefish ( Xenomystus nigri ) is the best-known representative of the African knifefish family and is considered a true classic among aquarists. With its flat, knife-shaped body and its floating, undulating movement, it glides silently through the water – a fascinating spectacle that enhances any aquarium.

In its natural habitat, the tranquil rivers and swamps of West and Central Africa, Xenomystus nigri lives in densely vegetated riparian zones. There, it mostly stays in shady areas and is primarily active at dusk and at night. This species is peaceful, sensitive, and very adaptable – ideal for experienced keepers of calm community aquariums.

🌿 Characteristics & Attitude:
🐟 Fish size: M/L (approx. 10–12 cm, juvenile)
🌍 Origin: West & Central Africa (e.g. Nigeria, Cameroon, Congo) – Wild caught
🌡️ Temperature: 24-29°C
💧 pH value: 6.0–7.5
⚖️ Total hardness: up to 15 °dGH
🐠 Social behavior: Peaceful, calm, crepuscular
🏞️ Aquarium: from 300 liters with sandy substrate, roots, plants & low lighting

🍽️ Feeding:
The African knifefish readily accepts frozen and live foods such as brine shrimp, mosquito larvae, cyclops, and krill. High-quality, fine granules are also accepted after an acclimation period. A varied diet promotes vitality and vibrant coloration.

💡 Tip:
Xenomystus nigri prefers calm aquariums with dim lighting, dense planting, and fine substrate. Peaceful tank mates of similar size are ideal. Stress from more active species should be strictly avoided.

👉 Conclusion:
The African knifefish ( Xenomystus nigri ) is an elegant, peaceful and fascinating fish with a unique swimming behavior – a real eye-catcher for African aquariums.