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The knifefish has approximately one hundred and fifty fin rays along its ribbon-fin. These individual fin rays can be curved nearly twice the maximum recorded curvature for ray-finned fish fin rays during locomotion. These fin rays are curved into the direction of motion, indicating that the knifefish has active control of the fin ray curvature ...
The African knifefish, Gymnarchus niloticus – also called the aba aba [a] – is an electric fish, living at the bottoms of rivers and lakes. It is the only species in the genus Gymnarchus and the family Gymnarchidae , within the order Osteoglossiformes .
Like the other gymnotiforms, gymnotids have classic knifefish bodies. The body is long and eel-like, the dorsal fin and pelvic fins are absent, and the anal fin is extremely long and used for movement.
Xenomystus nigri (Günther, 1868) (African brown knifefish) Subfamily Notopterinae Bleeker 1851 (Asian knifefishes, Asian featherbacks) Genus Chitala Fowler, 1934. Chitala blanci (d'Aubenton, 1965) (royal knifefish or Indochina featherback) Chitala borneensis (Bleeker, 1851) (Indonesian featherback) Chitala chitala (F. Hamilton, 1822) (Indian ...
Scutigera is a centipede genus in the scutigeromorph (house centipede) family Scutigeridae, a group of centipedes with long limbs and true compound eyes (which were once thought to be secondary, re-evolved "pseudofacetted eyes" [1]).
Scolopendra subspinipes is a species of very large centipede found throughout southeastern Asia. One of the most widespread and common species in the genus Scolopendra, it is also found on virtually all land areas around and within the Indian Ocean, all of tropical and subtropical Asia from Russia to the islands of Malaysia and Indonesia, Australia, South and Central America, the Caribbean ...
Geophilus flavus is a terrestrial, soil-dwelling, species of centipede [2] in the Geophilidae family. G. flavus occurs in a range of habitats across central Europe, North America, Australia, New Zealand and other tropical regions. [3]
Notopteroidei is a suborder of the order Osteoglossiformes that contains the extant families Gymnarchidae (aba), Notopteridae (feather backs and knifefish) and Mormyridae (elephantfishes), as well as several extinct taxa. The Mormyridae are weakly electric fishes, able to locate prey in turbid water.