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Osteoglossiformes (Bony tongues) >
Mormyridae (Elephantfishes)
Etymology: Marcusenius: Becasue of J. Marcusen, author of "Zur Phauna des Schwarzen Meeres", 1867; ichthyologist; lucombesi: The specific name refers to the type locality of this species, Lucombe River, a tributary of the Ruvuma River system in the Niassa Game Reserve.
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.
Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة قاعية التغذية و المعيشة. Tropical
Africa: tributaries of Ruvuma River in Mozambique (Ref. 95448).
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 12.2 cm SL ذكر/ مختلط الجنس; (Ref. 95448)
وصف مختصر
مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
الأشواك الظهرية (المجموع) : 0; الأشعة الظهرية الناعمة (المجموع) : 22 - 24; شوكة شرجية: 0; أشعه شرجية لينه: 28 - 29; فقرات: 44. Diagnosis: Marcusenius lucombesi can be distinguished from its congeners by the following characters: distance dorsal fin origin to end of caudal peduncle 40.0-43.2% of standard length; distance anal fin origin to end of caudal peduncle 43.6-45.9% of standard length; pre-anal length 56.6-59.2% of standard length; pre-dorsal length 59.5-63.3% of standard length; low caudal peduncle depth 25.0-30.8% into its length; circumpeduncular scales 14-16; anal fin rays 28-29; dorsal fin rays 22-24; total vertebrae 44; lateral line scales 55-56; anterior gill rakers (4-5)+(4-5); total anterior gill rakers 8-10; posterior gill rakers (6)+(7); total posterior gill rakers 13; jaws with 5-5 conical teeth (Ref. 95448).
Found in aquatic weed beds, marginal vegetation and root-stocks of bank vegetation in headwater streams through to floodplain margins (Ref. 95448).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Maake, P.A., O. Gon and E.R. Swartz, 2014. Descriptions of three new species of Marcusenius Gill, 1862 (Teleostei: Mormyridae) from South Africa and Mozambique. Zootaxa 3780(3):455-480. (Ref. 95448)
IUCN Red List Status (Ref. 130435: Version 2024-2)
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مصادر علي الأنترنت
Estimates based on models
Phylogenetic diversity index (Ref.
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).
مستوى غذائي (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
المرونه (Ref.
120179): عالي, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أقل من 15 شهر (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
