African Knifefish Care Guide
Xenomystus nigri
- Max Size
- 25.0 cm / 10.0"
- Temperature
- 24–28°C (75–82°F)
- pH Range
- 6.0 – 7.5
- Min Tank Size
- 125L (33 gal)
- Min Group Size
- Can be kept alone
- Tank Level
- Bottom
- Origin
- Africa
- Temperament
- Aggressive
- Difficulty
- Moderate
- Breeding Difficulty
- Difficult
Diet
Carnivorous. Accepts live and frozen foods like bloodworms, brine shrimp, and small fish.
Community Compatibility
Peaceful community fish that are not too small to be considered prey. Avoid aggressive or overly territorial tankmates.
Good to Know
Knifefish are usually kept alone due to their aggression.
Gender Differences
Minimal sexual dimorphism. Males may be slightly slimmer than females.
About the African Knifefish
The African Knifefish, scientifically known as Xenomystus nigri, is an enigmatic freshwater fish that hails from the rivers and waterways of Central and West Africa. Recognizable by its slender, elongated body and knife-like shape, this nocturnal species is a captivating addition to aquariums, known for its unique electrical communication abilities.
Native to slow-moving, murky waters, the African Knifefish is easily distinguished by its elongated anal fin, giving it a ribbon-like appearance. Despite its name, it is not a true knifefish but rather belongs to the family Notopteridae. What sets this fish apart is its ability to generate weak electric fields for communication and navigation, a trait shared with other members of the Notopteridae family.
In captivity, creating an environment that mimics its natural habitat is essential for the well-being of the African Knifefish. This involves providing hiding spots, subdued lighting, and a soft substrate. Due to their nocturnal nature, these fish may appreciate the addition of floating plants to diffuse the lighting and create shadowed areas.
Feeding the African Knifefish can be a unique experience, as they are carnivorous and prefer live or frozen foods. Offerings such as bloodworms, brine shrimp, and small fish complement their diet. While they may adapt to commercial pellets, a varied diet contributes to their overall health.
African Knifefish are generally peaceful but can be territorial, especially during breeding. Keep them in a species-specific setup or with compatible tankmates of similar size and disposition. Due to their sensitivity to water quality, regular water changes and a well-maintained filtration system are crucial for their health.
Despite their somewhat secretive nature, African Knifefish are intriguing to observe during their active periods, especially in the dimly lit aquarium. Their unique electrical communication and striking appearance make them a fascinating choice for hobbyists looking to explore the diversity of freshwater aquarium species.
Stock African Knifefish in Your Tank
Use our free stocking calculator to see if African Knifefish fits your aquarium