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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); albertinensis: The specific name, albertinensis, is given in reference to the Albertine Rift, in which valley the species is found in the northern Lake Albert basin and extending into the Albert Nile drainage; an adjective derived from the geographical name (Ref. 123150).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch; pH range: 7.8 - 8.5. Tropical; 29°C - 34°C (Ref. 123150)
Africa: ephemeral pools and marshes of Albert Nile drainage and small river systems into north-eastern part of Lake Albert in northwestern Uganda (Ref. 123150).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm
Max length : 5.0 cm SL mannelijk / geslacht onbekend; (Ref. 123150)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 15 - 18; Anale stekels: 0; Anale zachte stralen: 16 - 18. Diagnosis: Nothobranchius albertinensis is distinguished from all other species of the genus, with the exception of N. ugandensis, by the following combination of characters in males: body colouration light blue with red-brown scale margins; frontal part of head and snout red-brown and throat light blue; caudal fin uniform red (Ref. 123150). Furthermore, it differs from N. ugandensis by a yellow dorsal fin with red-brown stripes in medial part parallel to fin rays vs. light blue with red-brown spots and irregular stripes perpendicular to fin rays; yellow anal fin without markings vs. light blue and occasionally with red-brown spots; anal fin positioned anterior to dorsal fin, mean preanal length 59.8% of standard length and mean predorsal length 60.7% of standard length vs. posteriorly positioned with 60.9% of standard length and 60.2% respectively in N. ugandensis; and greater anal-fin base length, 22.5-25.9% of standard length vs. 19.3-22.2% (Ref. 123150).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Found in ephemeral pools and marshes as well as small river systems (Ref. 123150); the type locality is an isolated pool, about 1 m at the deepest point, in an area that was overgrown by reeds (Ref. 123150).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Nagy, B., B.R. Watters, P.D.W. van der Merwe, F.P.D. Cotterill and D.U. Bellstedt, 2020. Review of the Nothobranchius ugandensis species group from the inland plateau of eastern Africa with descriptions of six new species (Teleostei: Nothobranchiidae). Ichthyol. Explor. Freshwat. 30(1):21-73. (Ref. 123150)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
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Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00250 - 0.01453), b=3.13 (2.93 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Kwetsbaarheid van de visserij (Ref.
59153): Low vulnerability (10 of 100).
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