Collared knifefish or Finscale razorfish, Cymolutes torquatus.
Jack-knifefish, Equetus lanceolatus.
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resources: All Things Knife Families Apteronotidae (ghost knifefishes) Eigenmanniidae (obsolete?) Gymnotidae (naked-back knifefishes and electric eels) Hypopomidae Rhamphichthyidae Sternopygidae The gymnotiforms are an order (Gymnotiformes) of knifefishes that have organs adapted to the exploitation of bioelectricity. ... Genera Chitala Notopterus Papyrocranus Xenomystus See text for species. ... Genera Glass knifefishes (Sternopygidae) are a family of fishes in the order Gymnotiformes. ... Binomial name Bathystethus cultratus (Forster, 1801) The grey knifefish (Bathystethus cultratus) is a sea chub of the genus Bathystethus, found around the offshore islands of the east coast of Northland on the North Island of New Zealand, in surface waters. ... Binomial name Labracoglossa nitida McCulloch & Waite, 1916 The blue knifefish (Labracoglossa nitida) is a sea chub of the genus Labracoglossa, found off eastern Australia, and around the offshore islands of the east coast of Northland on the North Island of New Zealand, to depths of 20 metres. ... Image File history File links Disambig_gray. ...
SB : A peaceful Knifefish that, unusually, should be kept in groups.
PD : This elongated fish is high-backed with a long fin formed by the connection of theanal and caudal fins.The body color is silver-gray with four to ten distinct, fl ocelli on the rear partof the body.Each ocelli is surrounded by a white area.
The African Knifefish emits chiming bell-like sounds when swallowing airat the water surface.This species has a swim-bladder which serves as a respiratory organ.
The Nile knifefish, the only species in the family Gymnarchidae, resembles an electric eel with its dowdy coloring and long, tapering body.
Instead the pulses enable the knifefish to plot its course, detect food or foes a few feet away, and exchange such information as species and mating or warning signs.
To escape your learning gap, turn the dial to WNIF or head down to Shedd Aquarium to see a live broadcast by the Nile knifefish in the Waters of the World galleries.
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