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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. [...] (Ref. 128868), visit book page.
More on author: Boulenger.
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; Γλυκού νερού βενθικό(ς); ποταμόδρομος (Ref. 51243). Tropical
Africa: Cuanza, Kunene, (upper) Zambezi (Ref. 11970, 94473, 120641), Okavango and southern Congo River basin (Ref. 120641) in Angola. Also in the Kasai (Ref. 41590), middle Congo River (Ref. 41591) and Aruwimi (Ref. 106290) in Democratic Republic of the Congo; possibly also in Pool Malebo (Ref. 45486).
Μέγεθος / Βάρος / Age
Γεννητική Ωρίμανση: Lm ? range ? - ? cm
Max length : 13.5 cm TL αρσενικό/απροσδιόριστο; (Ref. 42015)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 0; Μαλακές ραχιαίες ακτίνες (συνολικά) : 26; Εδρικές άκανθες: 0; Μαλακές εδρικές ακτίνες: 33. Diagnosis: Marcusenius angolensis can be distinguished from its congeners by the following characters: number of anal fin rays 33, number of dorsal rays 26, anal fin length 25.7% of standard length, dorsal fin length 19.6% of standard length, and caudal peduncle length 17.0% of standard length (Ref. 75962).
Colouration: colour in preservation: a homogeneous brown-ochre (Ref. 75962).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Kramer, B., P. Skelton, H. van der Bank and M. Wink, 2007. Allopatric differentiation in the Marcusenius macrolepidotus species complex in southern and eastern Africa: the resurrection of M. pongolensis and M. angolensis, and the description of two new species (Mormyridae, Teleostei). J. Nat. Hist. 41(9-12):647-708. (Ref. 75962)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Αναφ.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00244 - 0.01296), b=3.05 (2.85 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Αναφ.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Αναφ.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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