Pariosternarchus amazonensis

Pariosternarchus is a monospecific genus of freshwater ray-finned fish belonging to the family Apteronotidae, the ghost knifefishes, the only species in the genus is Pariosternarchus amazonensis. It is found in the main channel of the Amazon River in Brazil and Peru, likely near the bottom in deep, fast-moving water. This species is characterized by a wide head with a flat bottom, and very large sensory canals along the lower jaw. Like several other knifefishes found in...