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Osteoglossiformes (Bony tongues) >
Mormyridae (Elephantfishes)
Etymology: Marcusenius: Becasue of J. Marcusen, author of "Zur Phauna des Schwarzen Meeres", 1867; ichthyologist.
Eponymy: Dr Johann Andreas Marcusen (1817–1894) was a Latvian of German descent who was a physician, ichthyologist and zoologist. [...] Herbert Taylor Ussher (1836–1880) was, variously, the Governor of the Gold Coast (Ghana), the Governor of Tobago, and Consul-General in Borneo. [...] (Ref. 128868), visit book page.
More on author: Günther.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande; flodvandrande (Ref. 51243). Tropical
Africa: Liberia to Ghana (Gold Coast). Also known from the Ouémé River in Benin.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 13.0  range ? - ? cm
Max length : 35.0 cm SL hane/ej könsbestämd; (Ref. 123661); publicerad maxvikt: 469.00 g (Ref. 123661)
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 27 - 34; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 23 - 29. Dorsal fin origin on same level as anal fin.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Affinities: M. meronai. Relatively close to M. furcidens which is found in the same geographic setting in Côte d'Ivoire. A fractional spawner (Ref. 10605; 10606).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Bigorne, R., 1990. Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00681 - 0.01610), b=2.82 (2.70 - 2.94), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Low to moderate vulnerability (33 of 100).
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