Syatematic position Class: Actinopterygii (ray-finned fishes) Order: Osteoglossiformes (bony tongues) Family: Notopteridae (featherbacks or knifefishes) Genus: Notopterus Species: N. notopterus Synonyms Clupea synura Bloch & Schneider, 1801 Gymnotus notopterus Pallas, 1769 Notopterus kapirat (Lacepède, 1800) Notopterus bontianus Valenciennes, 1848 Mystus