Nothobranchius milvertzi

Nothobranchius milvertzi Nagy, 2014

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drawing shows typical species in Nothobranchiidae.

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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335)milvertzi: The species is named in honour of Finn Christian Milvertz (Solrød Strand, Denmark), renowned breeder and collector of killifish (Ref. 95524).
Eponymy: Finn Christian Milvertz of Solrød Strand, Denmark, is an aquarist; a ‘renowned’ killifish breeder and collector. He co-collected the type with Béla Nagy at ephemeral pools of the Lushiba Marsh, Zambia. (Ref. 128868), visit book page.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

; süßwasser pelagisch; pH range: 6.9 - 6.9. Tropical

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Africa: ephemeral pools in the Lushiba Marsh, part of Lake Mweru drainage, in Zambia (Ref. 95524).

Größe / Gewicht / Alter

Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 3.7 cm SL Männchen/unbestimmt; (Ref. 95524)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 15 - 17; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 15 - 18. Diagnosis: Nothobranchius milvertzi belongs to the Nothobranchius taeniopygus species-group, presenting the diagnostic characters of this complex of caudal and anal fin with broad light submarginal band and dark distal margin in males (Ref. 95524). Nothobranchius milvertzi is distinguished from all other species of this complex, with the exception of N. malaissei and N. hassoni, by having an anal fin with orange submarginal band and a dark red-brown distal margin (Ref. 95524). It is distinguished from these two last mentioned species by having a red caudal fin with narrow orange semicircular submarginal band and wide dark red-brown distal margin (Ref. 95524). Furthermore, the species presents within the species-group the unique morphometric characters of head length 28.5-31.5% of standard length, interorbital width 39-46% of head length, and snout length 18-20% of head length (Ref. 95524).
Body shape (shape guide): short and / or deep.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

The accompanying fauna of the ephemeral pools consisted of non-annual species, such as Barbus haasianus, Lacustricola moeruensis, Protopterus sp. and Pseudocrenilabrus cf. philander (Ref. 95524). The type locality was a large ephemeral pool formed in a river bed, as a standing fragment of the seasonal river, about 50 m long and 10 m wide, and about 2 m deep at its deepest point; the edge of the habitat was heavily overgrown by grass and the aquatic vegetation consisted of Nymphea species; the water was brown and slightly turbid, whereas at shallower parts the bottom of the pool was visible (Ref. 95524). Eggs slightly oval, measuring 1.27-1.36 mm on average, with short filaments on chorion (Ref. 95524).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

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Nagy, B., 2014. Nothobranchius milvertzi, a new species of killifish from the Lushiba Marsh in the Lake Mweru drainage, Zambia (Teleostei: Cyprinodontiformes: Nothobranchiidae). Ichthyol. Explor. Freshwat. 24(4):347-360. (Ref. 95524)

IUCN Rote Liste Status (Ref. 130435: Version 2025-2)

  stark gefährdet (EN) (B1ab(iii)+2ab(iii)); Date assessed: 04 January 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

Fischereien: nicht kommerziell
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Schätzungen auf der Grundlage von Modellen

Phylogenetischer Diversitätsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophische Ebene (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Anfälligkeit der Fischerei (Ref. 59153):  Low vulnerability (10 of 100). 🛈