Black Ghost Knife Fish - Single

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)