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Following modified from CalPhotos
|http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Electrophorus+electricus&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Animal ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Electrophorus+electricus&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Animal|
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SELECT * FROM img WHERE ready=1 and taxon like "Electrophorus electricus%" and (lifeform != "specimen_tag" OR lifeform != "Animal") ORDER BY taxon
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ID: 0091 3183 0935 0109
John H. Tashjian
© 2001 California Academy of Sciences
UCMP specimen card
ID: 2222 0704 0053 0016
© University of California Museum of Paleontology
ID: 0000 0000 0908 1413
© 2008 John White
ID: 0000 0000 1008 1800
© 2008 Tammy Ward
ID: 0000 0000 1008 1801
© 2008 Tammy Ward
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Following modified from FishBase
|http://www.fishbase.org/Summary/speciesSummary.php?genusname=Electrophorus&speciesname=electricus ---> https://www.fishbase.in/Summary/speciesSummary.php?genusname=Electrophorus&speciesname=electricus|
https://www.fishbase.in/Summary/speciesSummary.php?genusname=Electrophorus&speciesname=electricus ---> https://www.fishbase.in/summary/Electrophorus-electricus.html
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Common name (e.g. trout)
Genus + Species (e.g. Gadus morhua)
Classification / Names
| Catalog of Fishes (
Actinopterygii (ray-finned fishes) >
Greek, elektron = amber + Greek,pherein = to carry (Ref.
. More on author:
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical; 23°C - 28°C (Ref.
South America: Amazon and Orinoco River basins, and related areas in northern South America.
Size / Weight / Age
range ? - ? cm
Max length : 250 cm SL male/unsexed; (Ref.
); max. published weight: 20.0 kg (Ref.
(total): 0. Body elongated and cylindrical, almost without scales; head flattened; mouth large with one row of conical teeth on each jaw; presence of three abdominal pairs of electric organs; body color dark with anterior ventral part yellowish (Ref.
Prefer muddy bottoms and calm waters; frequently found in coastal plains, swamps and creeks but is also found inland where a favorable biotope exist. Juveniles feed on invertebrates, adults feed on fish and small mammals (Ref.
), first-born larvae prey on other eggs and embryos coming from late spawning batches (Ref.
). The electric organ of this species consists of flattened electrocytes, numbering to about hundreds of thousands, connected in series (Ref. 10840;
). Generates two type of electric organ discharges (EODs) from different electric organs which are of myogenic derivation: 1) low-voltage EODs (about 10 V) emitted by the Sach's organ at rates of up to 25 Hz, and 2) high-voltage EODs (about 50-fold) emitted by the main and Hunter's organs at peak rates of up to several hundred Hz. Low-voltage EOD has been associated with electro location whereas high-voltage EOD has been noted during predatory attacks (Ref.
). An EOD of 500 V was recorded from a 1 m specimen (Ref.
), making it a potentially dangerous species. Incorporation of this species in fish-based house security systems has been suggested (see Ref. 9506). Also possesses high-frequency sensitive tuberous receptors patchily distributed over the body that seems useful for hunting other gymnotiforms (Ref.
). A nocturnal species; captive specimens showed higher low-voltage EOD activity during the night compared to daytime (Ref.
). This cycle seems to be free-running (internally controlled) (Ref.
). Probably a fractional spawner; fecundity count was17,000 eggs (Ref.
). An obligatory air breather (Ref.
) and can withstand poorly oxygenated water (Ref.
). Used in experimental studies.
Males construct foam nests and guard the growing larvae until mid-January when the first seasonal rains flood the breeding area, causing the about 10 cm long young eels to disperse (Ref.
). Males outnumber females (3:1) and are considerably larger than females (Ref.
). There are three successive batches of eggs deposited in a spawning period. Not all eels with fully developed gonads (in Goiapi drainnage) participated in the annual spawning activity suggesting that mating success depends in part on finding suitable breeding sites (Ref.
Ortega, H. and R.P. Vari
, 1986. Annotated checklist of the freshwater fishes of Peru. Smithson. Contrib. Zool. (437):1-25. (Ref.
IUCN Red List Status (Ref.
Least Concern (LC)
; Date assessed:
01 March 2007
Threat to humans
Fisheries: commercial; aquarium: public aquariums
Stamps, Coins Misc.
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Check for Species Fact Sheets
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Websites from users
Catalog of Fishes
| IGFA World Record |
Otolith Atlas of Taiwan Fishes
| Reef Life Survey |
Tree of Life
World Records Freshwater Fishing
Estimates of some properties based on models
Phylogenetic diversity index (Ref.
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00201 - 0.00906), b=3.04 (2.84 - 3.24), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
Trophic Level (Ref.
): 3.9 ±0.52 se; Based on food items.
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=3; tmax=6 (captive); Fec=17,000).
): High vulnerability (61 of 100) .
Price category (Ref.
Binohlan, Crispina B.
Reyes, Rodolfo B.
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