Apteronotus leptorhynchus (Ellis, 1912)

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Gymnotiformes \| Apteronotidae
Synonyms	Sternarchus leptorhynchus, ... more
Common names	Cuchillo, Samettiveitsikala, 小吻翎电鳗, ... more

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Picture by Galvis, G./Mojica, J.I./Camargo, M.

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Main reference

Ortega, H. and R.P. Vari. 1986. (Ref. 6329)
Other references | Biblio | Coordinator : Albert, James S. | Collaborators

Size / Weight / Age

Max length : 26.9 cm TL male/unsexed; (Ref. 36886)

Environment

Benthopelagic; freshwater

Climate / Range

Tropical; 24°C - 28°C (Ref. 2059)

South America: the Guianas, Brazil and Peru; rivers of Colombia and Venezuela, including the Catatumbo River.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal fin reduced to a dorsal filament;

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).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (tm=1)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (20 of 100)	Not marketed/unknown

Entered by Binohlan, Crispina B.

Modified by Froese, Rainer

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Page last modified by : elaxamana, 15 July 2009

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