Small Black Ghost Knifefish

The Black Ghost Knifefish is a tropical fish belonging to the ghost knifefish family. They originate in freshwater habitats in South America where ranging from Venezuela to the Paraguay–Paraná River, including the Amazon Basin.
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.