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Apteronotus leptorhynchus in French Guiana

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Apteronotus leptorhynchus   (Ellis, 1912)
Family:	Apteronotidae (Ghost knifefishes)			picture (Aplep_u5.jpg) by Galvis, G./Mojica, J.I./Camargo, M.
Order:	Gymnotiformes  (knifefishes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:
Max. size:	26.9 cm TL (male/unsexed; Ref. 36886)
Environment:	benthopelagic
Climate:	tropical; 24 - 28°C
Global Importance:
Resilience:	High, minimum population doubling time less than 15 months (tm=1)
Distribution:	South America: the Guianas, Brazil and Peru; rivers of Colombia and Venezuela, including the Catatumbo River.
Diagnosis:	Dorsal fin reduced to a dorsal filament;
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)
Threatened:	Not Evaluated, see IUCN Red List  , (Ref. 36508)
Dangerous:	harmless
Coordinator:	Albert, James S.
Main Ref:	Ortega, H. and R.P. Vari. 1986. (Ref. 6329)
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French Guiana country information
Common names:	[ No common name ]		Ref:
Status:	native		Ref:
Salinity:	freshwater
Uses:	no uses
Country Information:	www.cia.gov/cia/publications/factbook/geos/fg.html
Occurrences:	Occurrences    Point map
Main Ref:	Baensch, H.A. and R. Riehl, 1991
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More information:	Countries FAO areas Occurrences Introductions Ecosystem Ecology Diet Food items Food consumption Ration Predators Ciguatera Fish loss Common names Synonyms Pictures Sounds Reproduction Maturity Spawning Eggs Egg dev. Larvae Larval dynamics References Growth L-W relationship L-L relationship Length frequencies Recruitment Max. age & size Metabolism Morphology Morphometrics Gill area Brains Vision Collaborators Genetics Allele frequencies Heritability Strains Aquaculture Aquaculture profile Diseases Ecotoxicology Processing Speed Swim. type Stamps
	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Length-frequency Wizard | Life-history tool | Point map |
Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | PubMed | Scirus | Public aquariums | Tree of Life |   Neodat | Zoological Record Other web sites |
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	Entered:  Binohlan, Crispina B.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07