Black Ghost Knifefish - in Aquaria

In Aquaria

Black ghost knifefish require a medium sized tank of 30-40 US gal (95-110 litres) when smaller, though as they grow larger will require a much larger tank of around 80-90+ US gal. A lid is needed as they have been known to jump out. Black Ghost knifefish get to a maximum size of 20" in the wild, but usually stop growing at 12" in home aquaria, although they may grow to 15" in a larger tank. They should be provided with a shelter (such as a plastic tube or driftwood) in which to hide. They prefer a dimly lit tank as their eyesight is optimized for low light. To help them see, they are a weakly electric fish. They will eat smaller fish in the tank and are intolerant of conspecifics. As with other scaleless fish, they are vulnerable to parasite infestations such as ich (Ichthyophthirius multifiliis). They can reproduce in captivity, although there are only a few reports of Black Ghost Knifefish reproducing.