{{Short description|Species of fish}} {{Speciesbox | image = | status = VU | status_system = IUCN3.1 | status_ref = <ref name="iucn">{{Cite IUCN |author=Nagy, B. |author-link=Béla Nagy (ichthyologist) |author2=Watters, B. |year=2019 |title=''Nothobranchius ivanovae'' |article-number=e.T53890320A58340339 |doi=10.2305/IUCN.UK.2019-3.RLTS.T53890320A58340339.en |access-date=1 May 2025}}</ref> | taxon = Nothobranchius ivanovae | authority = Valdesalici, 2012 | synonyms = }}

'''''Nothobranchius ivanovae''''' is a species of seasonal killifish in the family Nothobranchiidae. They are small: adult male specimen generally reach {{convert|4|–|5|cm|in}} while females are even smaller and less brightly colored. This species is endemic to seasonal freshwater habitats in western Tanzania. It is currently known from a large marshland in Katavi National Park that covers approximately 50&nbsp;km from Kabungo to Sibwesa, and belongs to the Katuma River drainage in western Tanzania.<ref name="valdesalici">{{Cite journal |author=Valdesalici, S. |author-link=Stefano Valdesalici |year=2012|title=''Nothobranchius kardashevi'' and ''Nothobranchius ivanovae'' (Cyprinodontiformes: Nothobranchiidae): two new annual killifishes from the Katuma River drainage, western Tanzania |journal=Aqua, International Journal of Ichthyology |volume=18 |issue=4 |page=192}} {{ResearchGatePub|235969644}}</ref><ref name="Nagy2015">{{Cite journal |author=Nagy, B. |author-link=Béla Nagy (ichthyologist) |year=2015 |title= Life history and reproduction of ''Nothobranchius'' fishes |journal=Journal of the American Killifish Association |volume=47 |issue=4–6 |pages=182–192}} {{ResearchGatePub|341121138}}</ref>

Phases in the seasonal life cycle underscore the vulnerabilities of ecological factors that need to be preserved to maintain the structural integrity of the habitats throughout both seasonal phases of wet and dry seasons.<ref name="Nagy&Watters2021">{{Cite journal |author=Nagy, B. |author-link=Béla Nagy (ichthyologist) |author2=Watters, B.R. |author-link2=Brian R. Watters |name-list-style=amp |year=2021 |title=A review of the conservation status of seasonal ''Nothobranchius'' fishes (Teleostei: Cyprinodontiformes), a genus with a high level of threat, inhabiting ephemeral wetland habitats in Africa |journal=Aquatic Conservation: Marine and Freshwater Ecosystems |volume= 32 |issue=1 |pages=199–216 |doi=10.1002/aqc.3741}} {{ResearchGatePub|355904136}}</ref>

==Sources== {{Reflist}}

==External links== * ''[https://wildnothos.wixsite.com/wildnothos/ivanovae Nothobranchius ivanovae]'' on WildNothos - various information and photographs of this species

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ivanovae Category:Fish described in 2012 Category:Fish of Tanzania

{{Nothobranchiidae-stub}}