Black Ghost Knife Fish

Black Ghost Knife Fish (

Apteronotus albifrons

)

Care Level: Moderate to Advanced

The Black Ghost Knife Fish is a fascinating nocturnal species known for its sleek black body, graceful swimming motion, and distinctive white markings on its tail. Using weak electrical signals to navigate and locate food, this intelligent fish makes a unique centerpiece for large, peaceful freshwater aquariums.

✔ Temperament: Peaceful but territorial with its own kind
✔ Adult Size: 18–20 inches (45–50 cm)
✔ Minimum Tank Size: 100 gallons
✔ Temperature: 75–82°F (24–28°C)
✔ pH: 6.0–7.5
✔ Diet: Carnivore – enjoys sinking carnivore pellets, bloodworms, blackworms, brine shrimp, earthworms, and other frozen or live foods.

How to Care for Your Black Ghost Knife Fish

✔ Provide plenty of caves, driftwood, PVC tubes, and shaded hiding places, as they are most active during the evening and at night.
✔ Maintain excellent water quality with strong filtration and regular water changes.
✔ Feed a varied, protein-rich diet, preferably during the evening when they are most active.
✔ House with peaceful, similarly sized fish and avoid aggressive species or very small fish that may be eaten.
✔ Ensure the aquarium has a secure lid, as Black Ghost Knife Fish can jump when startled.

With proper care, Black Ghost Knife Fish can live 10–15 years and become an incredible, interactive addition to large freshwater aquariums thanks to their intelligence, graceful movements, and unique behaviour.

Available now at Primal Paradise Pets!