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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335); rosenstocki: Named for John Rosenstock of Hellerup, Denmark, who collected this new species.
Eponymy: John Rosenstock (d: 1945) is a Danish psychologist and killifish aquarist. [...] (Ref. 128868), visit book page.

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

; eau douce pélagique. Tropical

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Africa: Luapula River system (upper Congo River basin) in Zambia (Ref. 53985).

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 4.5 cm TL mâle / non sexé; (Ref. 53985); 3.9 cm TL (female)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Rayons mous dorsaux (Total) : 15 - 17; Rayons mous anaux: 16 - 17. Diagnosis: This species is distinguished from its congeners by the following combination of unique characters: 15-17 dorsal fin rays; 16-17 anal fin rays; male coloration with irregular red reticulation contrasting with light blue background color on the entire body. The frontal and superior portion of the head red; anal fin with a red distal part. The caudal fin base is red spotted, with distal part transparent light blue. The anterior part of base of dorsal fin has distinct black spots and hardly visible papillae. Sides of female are not marked like the males, but with narrow brown scale margins (Ref. 53985).

Populations of this species have been found scattered over a large area in the Luapula River basin; specimens have been found mainly in shallow and vegetated parts of small, slow-flowing rivers which empty into swamps; the species was also collected from so-called "dembos" or water-filled depressions; all habitats were temporary and only filled with water during the wet season and for a short period afterwards, the bottom substrate of which were usually silt or clay with a high humus content (Ref. 53985).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Distinct pairing (Ref. 205).

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Valdesalici, S. and R.H. Wildekamp, 2005. A new species of the genus Nothobranchius (Cyprinodontiformes, Nothobranchiidae) from Luapula River basin, Zambia. aqua, J. Ichthyol. Aquat. Biol. 9(3):89-96. (Ref. 53985)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)

Vulnérable, voir Liste Rouge IUCN (VU) (B1ab(iii)); Date assessed: 08 January 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

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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=0.01122 (0.00472 - 0.02669), b=2.94 (2.74 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Résilience (Ref. 120179): Haut, temps minimum de doublement de population inférieur à 15 mois (tm=0.3-0.4).

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

Nothobranchius rosenstocki Valdesalici & Wildekamp, 2005