Knifefish

Knifefish may refer to several knife-shaped fishes:

• The Neotropical or weakly electric knifefishes, order Gymnotiformes, containing five families:
• Family Gymnotidae (banded knifefishes and the electric eel)
• Family Rhamphichthyidae (sand knifefishes)
• Family Hypopomidae (bluntnose knifefishes)
• Family Sternopygidae (glass and rat-tail knifefishes)
• Family Apteronotidae (ghost knifefishes)
• The featherbacks, family Notopteridae.
• The aba, Gymnarchus niloticus
• Four other unrelated fish species not in any of the above families:
• Grey knifefish, Bathystethus cultratus.
• Blue knifefish, Labracoglossa nitida.
• Collared knifefish or finscale razorfish, Cymolutes torquatus.
• Jack-knifefish, Equetus lanceolatus.

See also

• Knifefish (robot), an American military robot