Description
The Black Ghost Knifefish (Apteronotus albifrons) is a fascinating and unique freshwater fish species, well-known for its distinctive appearance and intriguing behavior.
Quick Facts
- Size: 15–20 in (38–50 cm) in captivity
- Body shape: Elongated, knife-like, laterally compressed
- Coloration: Solid black with a white blaze on nose + two white tail rings
- Movement: Uses undulating anal fin to glide gracefully forward & backward
- Behavior: Nocturnal, weakly electric, intelligent, can be hand-fed
- Tank size: 75–100 gallons minimum for one adult
- Tank setup: Dimly lit, sandy substrate, hiding spots (PVC, driftwood, caves)
- Water temperature: 74–82°F (23–28°C)
- pH range: 6.0–7.5
- Water hardness: Soft to moderately hard
- Diet: Carnivorous—bloodworms, brine shrimp, pellets, earthworms
- Feeding schedule: Best after lights off (nocturnal feeding)
- Tank mates: Peaceful, larger fish (angelfish, medium gouramis, large catfish)
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