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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 Écologie

; eau douce pélagique. Tropical

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Africa: Tanzania.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 3.2 cm SL mâle / non sexé; (Ref. 42930); 3.0 cm SL (female)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 11 - 13; Épines anales: 0; Rayons mous anaux: 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).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Vulnérable, voir Liste Rouge IUCN (VU) (B1ab(iii)); Date assessed: 31 October 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (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).

Niveau trophique (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