Oxynoemacheilus simavicus

{{Short description|Species of fish}}

{{Speciesbox|

| status = CR

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Crivelli, A.J. |date=2006 |title=Oxynoemacheilus simavicus |volume=2006 |page=e.T61347A12465793 |doi=10.2305/IUCN.UK.2006.RLTS.T61347A12465793.en |access-date=18 November 2021}}

| taxon = Oxynoemacheilus simavicus

| authority = (Balık & Bănărescu, 1978){{cite web | url = http://www.fishbase.se/summary/Oxynoemacheilus-simavicus.html | title = Oxynoemacheilus simavicus (Balik & Bănărescu, 1978) Simav loach | accessdate = 4 January 2018 | publisher = Fishbase | editor1 = Rainer Froese | editor2 = Daniel Pauly | year = 2017}}

| synonyms = Barbatula simavica (Balik & Banarescu, 1978)

}}

Oxynoemacheilus simavicus, the Simav loach, is a species of stone loach from the genus Oxynoemacheilus.{{cite journal | author = Kottelat, M. | year = 2012 | url = http://opac.admin.ch/gw/toc/pdf/toc001703351.pdf| title = Conspectus Cobitidum:an inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei)| journal = The Raffles Bulletin of Zoology | volume = Supplement No. 26 | pages = 1–199}} It is endemic to a single stream, the Simav, which is a tributary of the Gediz in western Anatolia, Turkey. The populations has declined and this is caused by threats such as pollution and extraction of water leading to an evaluation of this species conservation status by the IUCN as Critically Endangered.