Klassificering / Namn
Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); venustus: The specific name venustus is a Latin adjective meaning attractive, charming, graceful, pretty, and is given with reference to the attractive appearance and distinctive colouration of the males (Ref. 123150).
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk; pH range: 7.4 - 7.4. Tropical; 25°C - 25°C (Ref. 123150)
Africa: ephemeral pools and marshes associated with smaller stream systems of Lake Victoria basin in northwestern Tanzania (Ref. 123150).
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 3.6 cm SL hane/ej könsbestämd; (Ref. 123150)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 14 - 16; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 14 - 16. Diagnosis: Nothobranchius venustus belongs to the N. ugandensis species group presenting the following combination of characters in males: body colouration light blue with red or red-brown scale margins; frontal part of head red-brown and throat light blue or red; caudal fin uniform red; anal fin light blue or yellow with red-brown spotted pattern (Ref. 123150). Nothobranchius venustus differs from all other members of the N. ugandensis species group by a dorsal fin with a narrow light blue subdistal band and a narrow red-brown to black distal band; an anal fin light blue with irregular red-brown stripes perpendicular to fin rays proximally and medially; and orange with red-brown stripes parallel to fin rays in distal zone; and a dorsal-fin base length 20.4-23.2% of standard length vs. 23.4-28.7% (Ref. 123150).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Found in a temporary pool about 10 m wide, more than 20 m long, and about 1 m at the deepest point; the water was turbid, the bottom of the pool not visible (Ref. 123150).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
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 på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Sårbar (VU) (B1ab(iii)+2ab(iii)); Date assessed: 18 May 2020
Hot mot människor
Harmless
Mänskliga användningsområden
Verktyg
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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=0.00603 (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).
Trofisk nivå (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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