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Apteronotus leptorhynchus (Ellis, 1912)

Description

Dorsal fin reduced to a dorsal filament;

Common Names

  • Samettiveitsikala , Finnish , Finland
  • 小吻翎电鳗 , Mandarin Chinese , China
  • 小吻翎電鰻 , Mandarin Chinese , China
  • Cuchillo , Spanish , Colombia

    • Taxonomic Hierarchy

    Kingdom: Animalia

    Phylum: Chordata

    Class: Teleostei

    Order: Gymnotiformes

    Family: Apteronotidae

    Genus: Apteronotus

    Species: Apteronotus leptorhynchus (Ellis, 1912)

    Climate Zone

  • Tropical

    • Location

  • South America: the Guianas, Brazil and Peru; rivers of Colombia and Venezuela, including the Catatumbo River.

    • Biology

    Prefers fast flowing rivers (Ref. 26543). Forms loosely associated groups in rocky habitats or river banks (Ref. 10605). Nocturnal (Ref. 26543). Each individual fish possesses a unique spatiotemporal pattern of electric organ discharge (EOD) potentials distributed over the body surface (Ref. 10595). Chirps and EOD frequency modulations are important elements of courtship behavior and are sensitive to testosterone levels (Ref. 10011, 10883). Seems to reach sexual maturity at 1 year of age, based on breeding experiments (Ref. 10011). Tuberous electro receptors are differentiated and functional in larvae at day 9; electric organ and electro receptors both present in the larvae at the time of first exogenous feeding (Ref. 10605).

    Habitat

    benthopelagic