Black ghost knife fish are nocturnal. They are a weakly electric fish which use an electric organ and receptors distributed over the length of their body in order to locate insect larvae.
Hobbyists should keep Black Ghost Knifefish with tank mates that are not too boisterous or aggressive. Discus, Geophagus, Severum, Angelfish, peaceful Catfish, peaceful Cichlids and larger (6 inches or more) community species make good tank mates.