Black Ghost Knife Fish | 3 Inches | Single

The black ghost knife fish is a tropical fish belonging to the ghost knifefish family. They originate in freshwater habitats in South America where they range from Venezuela to the Paraguay–Paraná River, including the Amazon Basin The fish is all black except for two white rings on its tail, and a white blaze on its nose, which can occasionally extend into a stripe down its back. It moves mainly by undulating a long fin on its underside.

Body Shape: The Black Ghost Knife Fish is distinguished by its elongated, ribbon-like body, which is smooth and lacks traditional scales. Its streamlined shape and continuous, undulating fin along the lower half of its body contribute to its ghostly, knife-like appearance.

Coloration: At 3 inches, the Black Ghost Knife Fish displays a striking black coloration that covers most of its body. This color can vary slightly, sometimes showing dark gray tones or subtle variations. The fish's body appears sleek and glossy, further enhancing its ghostly appearance.

Fins: The most notable feature is the long, undulating fin that extends from the fish’s head to its tail. This fin, often described as "knife-like," is used to propel the fish in a wave-like motion, allowing it to navigate through its environment with a unique, ghostly grace.

Movement: This species is known for its distinctive swimming style. Instead of traditional fin movements, the Black Ghost Knife Fish uses its elongated fin to create a wave-like motion, which allows it to glide smoothly through the water.

Activity Level: The Black Ghost Knife Fish is predominantly nocturnal. It becomes more active during the evening and night, making it an intriguing species to observe after the lights in the aquarium are turned off.

Electroreception: One of the most fascinating aspects of this fish is its ability to generate and sense weak electrical fields, a trait known as electroreception. This ability helps it navigate and locate prey in the dark, murky waters of its natural habitat.

Tank Requirements: The Black Ghost Knife Fish thrives in a well-maintained aquarium that mimics its natural environment. It prefers a tank with plenty of hiding spots and structures, such as rocks, driftwood, or plants, which provide security and simulate its natural habitat.

Water Conditions: It requires a warm water environment, with temperatures ranging between 75°F and 82°F. The pH level should be maintained between 6.0 and 7.5. A soft substrate is recommended, as it’s more gentle on the fish and easier to maintain. The tank should also have a gentle filtration system to avoid strong currents that can stress the fish.

Feeding: The Black Ghost Knife Fish is a carnivorous species. In captivity, it should be fed a varied diet to ensure its health and well-being. High-quality sinking pellets are a staple, but it should also be provided with live or frozen foods such as worms, shrimp, and small fish. This varied diet helps to replicate its natural feeding habits and supports its overall health.