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Nothobranchius ivanovae Valdesalici, 2012

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drawing shows typical species in Nothobranchiidae.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Nothobranchius: Greek, nothos = false + Greek, brangchia = gill (Ref. 45335);  ivanovae: The species name is dedicated to the aquarist, collector, and discoverer of the species, Iva Ivanova from Dupnitsa, Bulgaria (Ref. 92886).

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

; süßwasser pelagisch. Tropical

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Africa: swampy area of Katuma River drainage in western Tanzania (Ref. 92886, 122068).

Size / Gewicht / Alter

Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm SL Männchen/unbestimmt; (Ref. 92886); 3.3 cm SL (female)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 17 - 18; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 17 - 18; Wirbelzahl: 28. Diagnosis: Nothobranchius ivanovae males are similar to other members of the N. taeniopygus species group, differing from all other species of the genus by caudal and anal fin with a broad light sub-marginal band and dark margin (Ref. 92886). It differs from the similar and geographically closest N. taeniopygus from Ipati River by the following combination of characters: caudal fin red vs. pale brownish red, caudal fin with subdistal band vs. without band, anal fin with a creamy yellow broad submarginal band vs. thin white band; and from N. taeniopygus from Wogo River by the following combination of characters: blue-grey scales vs. light blue, caudal fin red vs. pale brownish grey, caudal fin with a subdistal and distal band vs. without band (Ref. 92886). In addition, N. ivanovae males have a relatively shorter head compared to N. taeniopygus "Ipati river", 29.5-34.6% of standard length vs. 33.0-37.5%; smaller eye, 22.8-29.0% of head length vs. 30.7-38.9%; more scales on lateral line, 31 vs. 28-30; and more dorsal and anal fin rays, 17-18 vs. 14-15 and 17-18 vs. 15-17 respectively (Ref. 92886). They have also a shorter head compared to N. taeniopygus "Wogo river", 29.5-34.6% of standard length vs. 33.6-35.4%; more scales on lateral line, 31 vs. 30; and more dorsal fin rays, 17-18 vs. 15 (Ref. 92886).

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

Found in swampy area; described from a residual pool in the dry bed of the Karira stream (Ref. 92886).

Life cycle and mating behavior Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

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Valdesalici, S., 2012. Nothobranchius kardashevi and Nothobranchius ivanovae (Cyprinodontiformes: Nothobranchiidae): two new annual killifishes from the Katuma River drainage, western Tanzania. aqua, Int. J. Ichthyol. 18(4):191-198. (Ref. 92886)

IUCN Rote Liste Status (Ref. 130435)

  gefährdet, siehe IUCN Red List (VU) (B1ab(iii)+2ab(iii)); Date assessed: 09 December 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

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Internet Quellen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher Einträge suchen | CISTI | Catalog of Fishes: Gattung, Arten | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: Genom, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Gehe zu, Suchen | World Records Freshwater Fishing | Zoobank | Zoological Record

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).
Trophic level (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).