The Black Ghost Knifefish is a freshwater fish native to the Amazon River basin in South America. It is known for its elongated, knife-like body and can grow up to 20 inches long. This species is primarily nocturnal and uses electric fields to navigate and communicate with other fish. Black Ghost Knifefish are popular in the aquarium trade due to their unique appearance and behavior. They have a dark, almost black coloration with a distinctive white stripe along their body. These fish require a well-maintained tank with plenty of hiding spots and a soft substrate to thrive.