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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); geminus: From the Latin geminus meaning twin or double, in reference to the reflective silver spots in the upper part of the iris appearing as twin stars..

Environment: milieu / climate zone / depth range / distribution range Ecologie

; zoet water pelagisch. Tropical

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Africa: Tanzania.

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 3.2 cm SL mannelijk / geslacht onbekend; (Ref. 42930); 3.0 cm SL (female)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 11 - 13; Anale stekels: 0; Anale zachte stralen: 17 - 21. Preopercular series with 6 large neuromasts; male with orange-red spot pattern in dorsal and anal fins; caudal fin orange-red; female with spotted head, body and unpaired fins (Ref. 42930).

Found usually at the surface of pools preying on small food items (e.g. small insects) that fall on the water surface. These pools from which the species were collected are ephemeral and usually dry up seasonally (Ref. 42930).

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Wildekamp, R.H., B.R. Watters and I.F.N. Sainthouse, 2002. Two new species of the genus Nothobranchius (Cyprinodontiformes: Aplocheilidae) from the Kilombero River basin, Tanzania. Ichthyol. Explor. Freshwat. 13(1):1-10. (Ref. 42930)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Kwetsbaar, zie IUCN Rode Lijst (VU) (B1ab(iii)); Date assessed: 31 October 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

FAO - Publication: search | FishSource |

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Trophic ecology
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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01096 (0.00449 - 0.02680), b=2.92 (2.71 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.1 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Nothobranchius geminus Wildekamp, Watters & Sainthouse, 2002