Malapterurus electricus (Gmelin, 1789)
Electric catfish
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Bilder | Frimärken, mynt, diverse. | Google image
Malapterurus electricus
Bild av Nightingale, A.
Bilder | Frimärken, mynt, diverse. | Google image
Bild av Nightingale, A.
Klassificering / Namn Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa
> Siluriformes (Catfishes) > Malapteruridae (Electric catfishes)
Etymology: Malapterurus: Greek, mala = a lot of + Greek, pteron = fin + Greek, oura = tail (Ref. 45335); electricus: The electric discharging capacity of this electric catfish is described by the specific epithet (Ref. 44050).
More on author: Gmelin.
Etymology: Malapterurus: Greek, mala = a lot of + Greek, pteron = fin + Greek, oura = tail (Ref. 45335); electricus: The electric discharging capacity of this electric catfish is described by the specific epithet (Ref. 44050).
More on author: Gmelin.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi
; sötvatten bentopelagisk; pH range: 7.0 - 8.0; dH range: ? - 20; flodvandrande (Ref. 51243). Tropical; 23°C - 30°C (Ref. 1672); 35°N - 30°S
Utbredning Territorier | FAO områden | Ekosystem | Förekomster | Prickkarta | Utplanteringar | Faunafri
Africa: typical Sudanian distribution; in much of the Nile system (exclusive of Lake Victoria), Lake Turkana, Lake Chad and Senegal basins, throughout the Niger system and smaller southward flowing basins in west Africa, from Bandama through Volta rivers in Ivory Coast and Ghana (Ref. 44050). Absent from Congo basin; reports from Congo basin refer to any of the other species in this system (see Ref. 44050 for details).
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 122 cm SL hane/ej könsbestämd; (Ref. 3850); publicerad maxvikt: 20.0 kg (Ref. 3799); rapporterad maxålder: 10 år (Ref. 7248)
Max length : 122 cm SL hane/ej könsbestämd; (Ref. 3850); publicerad maxvikt: 20.0 kg (Ref. 3799); rapporterad maxålder: 10 år (Ref. 7248)
Kort beskrivning Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 0; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 9 - 11; Ryggkotor: 38 - 41. Diagnosis: tooth patches narrow; pectoral fin placed near body mid-depth; 7-8 branched caudal fin rays (Ref. 44050). 9-11 anal-fin rays, usually 10-11; 38-41 total vertebrae, usually 39-41 (Ref. 57130). Caudal saddle and bar pattern not present in adults (Ref. 57130), poorly developed in all ages (Ref. 44050). Flank and dorsum in adults and young marked with large blotches (some up to 4-5 times eye diameter); caudal fin of adults generally same color as flank ground color or slightly darker, larger specimens usually with spots or blotches in caudal fin (Ref. 44050, 57130).
Body shape (shape guide): fusiform / normal; Cross section: circular.
Body shape (shape guide): fusiform / normal; Cross section: circular.
Occur among rocks or roots. Favors sluggish or standing water. Active at night, feeding mainly on fish stunned by electric shocks. Described as a nocturnal piscivore that breeds during periods of high water; rarely feeds on molluscs (Ref. 44050). The electric organ, capable of discharging 300-400 V, is derived from pectoral muscle and surrounds almost the entire body. It is used both for prey capture and defense. Electric organ discharge (EOD) is intermittent and the amplitude increases with size of the fish (Ref. 10011). Responds immediately to cyclic light changes, exhibiting maximum EOD activity shortly after sunset and lowest activity just after sunrise (Ref. 10798). Its EOD duration decreased from 1.5 to 0.3 ms in response to increased temperature from 15 to 30°C (Ref. 10838). Adults form pairs and breed in excavated cavities or holes (Ref. 7248). Maximum size in Lake Chad reported as 1125mm SL, but most museum specimens much smaller (maximum 400mm SL, Nile River)(Ref. 57130).
Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
It is assumed that the male tends the clutch. Others report that the male takes the eggs into his mouth. It is also unknown how the fry is immune to the electric shocks by the parents (Ref. 1672).
Huvudreferens
Ladda upp dina referenser | referenser | Koordinator | Medarbetare
Roberts, T.R., 2000. A review of the African electric catfish family Malapteruridae, with descriptions of new species. Occas. Pap. Ichthyol. 1:1-15. (Ref. 34006)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Least Concern (LC) ; Date assessed: 04 March 2025
CITES
Not Evaluated
Hot mot människor
Other (Ref. 4967)
Mänskliga användningsområden
Fiskeri: husbehovsfiske; sportfisk: ja
FAO - Publication: search | FishSource |
Ytterligare information
Populationsdynamik
Tillväxtparametrar
Max. åldrar / storlekar
Längd-vikt rel.
Längd-längd rel.
Längd-frekvenser
Massakonvertering
Rekrytering
Abundans
Tillväxtparametrar
Max. åldrar / storlekar
Längd-vikt rel.
Längd-längd rel.
Längd-frekvenser
Massakonvertering
Rekrytering
Abundans
Livscykel
Reproduktion
Könsmognad
Mognad/Gills rel.
Fekunditet
Lek
Lekande aggregat
Ägg
Utveckling av ägg
Larver
Larvdynamik
Reproduktion
Könsmognad
Mognad/Gills rel.
Fekunditet
Lek
Lekande aggregat
Ägg
Utveckling av ägg
Larver
Larvdynamik
Anatomi
Gälyta
Hjärna
Otolit
Gälyta
Hjärna
Otolit
Fysiologi
Kroppssammansättning
Näringsämnen
Syreförbrukning
Typ av simning
Simhastighet
Visuella pigment
Ljud från fisk
Sjukdomar & Parasiter
Toxicitet (LC50)
Kroppssammansättning
Näringsämnen
Syreförbrukning
Typ av simning
Simhastighet
Visuella pigment
Ljud från fisk
Sjukdomar & Parasiter
Toxicitet (LC50)
Människorelaterad
Vattenbrukssystem
Vattenbruksprofiler
Avelslinjer
Ciguatera-fall
Frimärken, mynt, diverse.
Vattenbrukssystem
Vattenbruksprofiler
Avelslinjer
Ciguatera-fall
Frimärken, mynt, diverse.
Verktyg
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Internet-källor
AFORO (otoliths) | Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoologiskt register
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01202 (0.00883 - 0.01637), b=2.95 (2.86 - 3.04), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trofisk nivå (Ref. 69278): 2.9 ±0.38 se; based on food items.
Resiliens (Ref. 120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (tmax=10; Fec < 1,000).
Näringsämnen (Ref. 124155): Calcium = 48.9 [27.2, 92.2] mg/100g; Iron = 1.14 [0.65, 2.02] mg/100g; Protein = 16.4 [15.2, 17.6] %; Omega3 = 0.382 [0.141, 1.050] g/100g; Selenium = 119 [46, 264] μg/100g; VitaminA = 34.3 [11.4, 99.9] μg/100g; Zinc = 1.24 [0.82, 1.79] mg/100g (wet weight);