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Nothobranchius rachovii Ahl, 1926

Bluefin notho
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Image of Nothobranchius rachovii (Bluefin notho)
Nothobranchius rachovii
Picture by Plistil, J.

Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinoptérygiens (poissons à nageoires rayonnées) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335);  rachovii: Named in honour of Arthur Rachow (Ref. 97289).

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

; eau douce benthopélagique; pH range: 6.0 - 7.0; dH range: 4 - 6; non migrateur.   Tropical; 20°C - 24°C (Ref. 1672); 19°S - 20°S

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Africa: temporary pools and swamps or water-filled depressions in the lowland floodplains of the lower Pungwe River and lower Zambezi River (Ref. 85866), probably also in floodplains of other rivers between Pungwe and Zambezi River (Ref. 85866).

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm TL mâle / non sexé; (Ref. 27139)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 0; Rayons mous dorsaux (Total): 15-17; Épines anales 0; Rayons mous anaux: 15 - 18. Diagnosis: Nothobranchius rachovii is distinguished from other species of the genus by the following combination of characters: in males, a bright colouration consisting of alternating light blue and orange-red bars on the body and fins, orange-red head, and orange subterminal and black terminal bands in the caudal fin (Ref. 85866). It can be distinguished from the other species of the subgenus Nothobranchius as follows: from N. furzeri by male colouration, higher number of dorsal fin rays, 15-17 vs. 14-15, and a lower number of scales on the mid-longitudinal series, 26-28 vs. 28-30; from N. orthonotus by male colouration, lower number of scales on the mid-longitudinal series, 26-28 vs. 28-33, and shape of the dorsal profile, convex vs. flat; and from N. kadleci by male colouration and shape of the frontal region, higher number of dorsal and anal fin rays, 15-17 vs. 13-14 and 15-17 vs. 13-14 (Ref. 85866). Females can be distinguished by the presence of a reflective light blue spot on all scales of the flanks, vs. few, irregularly dispersed light blue-green spots in N. furzeri and N. kadleci or frequent presence of brown spots on body and fins in N. orthonotus (Ref. 85866). Nothobranchius rachovii can also be distinguished from all other species of the genus by its low number of diploid chromosomes, 2n=16 (Ref. 85866).

Biologie     Glossaire (ex. epibenthic)

Found in water-filled depressions in the floodplains of rivers; water depth is variable and decreases as the dry season progresses, eventually drying out completely (Ref. 85866). Littoral vegetation usually consists of grasses; aquatic vegetation may consis of Nymphea, Ottelia, Lagarosiphon and Utricularia species; occasionally, the swamps are used by local inhabitants to cultivate rice (Ref. 85866). Very difficult to maintain in aquarium (Ref. 27139).

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

Annual fish. Matures after 12 weeks. This updates previous information from Ref. 1672.

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Shidlovskiy, K.M., B.R. Watters and R.H. Wildekamp, 2010. Notes on the annual killifish species Nothobranchius rachovii (Cyprinodontiformes; Nothobranchiidae) with the description of two new species. Zootaxa 2724:37-57. (Ref. 85866)

Statut dans la liste rouge de l'IUCN (Ref. 119314)

  Préoccupation mineure (LC) ; Date assessed: 01 March 2007

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: ; Aquarium: Commercial
FAO(Publication : search) | FishSource |

Plus d'informations

Pays
Zones FAO
Écosystèmes
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Stocks
Écologie
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Éléments du régime alimentaire
Consommation alimentaire
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Noms communs
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Reproduction
Maturité
Frai
Rassemblement de ponte
Fécondité
Œufs
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Taille/Âge
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Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Résilience (Ref. 69278):  Haut, temps minimum de doublement de population inférieur à 15 mois ().
Vulnérabilité (Ref. 59153):  Low vulnerability (10 of 100) .
Catégorie de prix (Ref. 80766):   Unknown.