African knifefish

Xenomystus nigri

Wild range: West and Central Africa (Africa)

At a glance: African knifefish care

Compiled reference information. Review the care notes and original sources below.

What temperature is listed for African knifefish?

The compiled profile lists 24.0–28.0 °C for African knifefish (Xenomystus nigri). Check the original sources below for context and differing recommendations.

What tank size is listed for African knifefish?

The profile lists a minimum tank volume of 50.0 US gallons (200.0 liters). Volume alone does not establish suitability; consider dimensions, group size and other inhabitants alongside the full care notes.

What pH is listed for African knifefish?

The compiled profile lists a pH of 6.0–7.5. Review the cited care sources alongside the other water parameters in this profile.

Natural habitat

The African Brown Knifefish is native to the freshwater river systems of West and Central Africa, thriving in slow-moving waters characterized by sandy or muddy substrates. This species prefers areas with dense vegetation and murky conditions, which provide hiding spots and contribute to its nocturnal hunting behavior.

Where they are found

Predominantly found in West Africa, the Black African Knife Fish is known to occupy various freshwater habitats including swamps and lagoons. Despite being adaptable, they prefer environments rich in cover and food supply.

Aquarium care

Keeping the African Brown Knifefish requires a spacious aquarium of at least 200 liters, equipped with plenty of hiding spots and a secure lid, as these fish are known escape artists. Subdued lighting and good filtration are crucial, along with regular water quality monitoring.

Feeding

Feed the Black African Knife Fish a diet that mimics its natural carnivorous tendencies. They do well with a mixture of high-quality pellets, live or frozen food such as fish, worms, and crustaceans. Be cautious with smaller tank mates, as they may be seen as prey.

Compatibility

Black African Knife Fish are best kept with larger, peaceful fish that won't fit in their mouths. Avoid aggressive species as they may provoke stress. Tank mates such as cichlids that are on the peaceful side can coexist, but always monitor interactions to prevent aggression.

Breeding

Breeding the African Brown Knifefish in captivity is quite challenging and not commonly achieved. They are egg layers, but specific breeding habits in the wild remain poorly understood. Creating optimal water conditions may encourage breeding, yet success is not guaranteed.

Sources

Compiled from multiple independent care sheets — not copied from a single site.