A practical approach to revise the Oxynoemacheilus bergianus species group (Teleostei: Nemacheilidae) Author Freyhof, Jörg 0000-0002-7042-3127 Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, 10115 Berlin, Germany. joerg. freyhof @ mfn. berlin; https: // orcid. org / 0000 - 0002 - 7042 - 3127 joerg.freyhof@mfn.berlin Author Kaya, Cüneyt Recep Tayyip Erdogan University, Faculty of Fisheries, 53100 Rize, Turkey. Author Geiger, Matthias F. 0000-0003-2403-0805 Zoological Research Museum Alexander Koenig, Leibniz Institute for Animal Biodiversity, Adenauerallee 160, 53113 Bonn, Germany. m. geiger @ leibniz-zfmk. de; https: // orcid. org / 0000 - 0003 - 2403 - 0805 m.geiger@leibniz-zfmk.de text Zootaxa 2022 2022-04-20 5128 2 151 194 journal article 55850 10.11646/zootaxa.5128.2.1 de62b63c-58f4-4a92-b41b-e66c9e90a36a 1175-5326 6479752 17900DD5-DFEB-43D8-BBBB-DB60C74730FB Oxynoemacheilus banarescui ( Delmastro, 1982 ) ( Fig. 3 ) Orthrias brandti banarescui Delmastro, 1982: 53 , figs. 1–3 ( type locality: Turkey : Devrekani creek near Devrekani , Kocaçay basin) Material examined. FFR 15511, 4, 43–77 mm SL; Turkey : Kastamonu prov. : stream Devrekanı 8 km northeast of Devrekanı , 41.6275N 33.9224E .— FSJF 3119 , 30 , 31–67 mm SL; Turkey : Zonguldak prov. : Yenice River 15 km west of Yenice , 41.2325N 32.2041E .— FSJF 3122 , 6 , 64–78 mm SL; IUSHM 2018–1403 , 10 , 50–62 mm SL; Turkey: Karabük prov. : stream Davulga at 15 km north of Mengen , 41.0872N 32.0230E .— FSJF 3169 , 19 , 41–70 mm SL; Turkey : Kastamonu prov. : stream Devrekani at Kasaplar , 4 km north of Devrekani , 41.6224N 33.8526E . Material used in molecular genetic analysis. FSJF DNA-1626 ; Turkey : Kastamonu prov. : stream Devrekani at Kasaplar , 4 km north of Devrekani , 41.6224N 33.8526E ( GenBank accession: OK316781 , OK316749 ) .— FSJF DNA-1631 ; Turkey : Zonguldak prov. : Yenice River 15 km west of Yenice , 41.2325N 32.2041E ( GenBank accession: OK316694 , OK316657 ) . Distribution. Oxynoemacheilus banarescui is known from the Devrekani and Yenice/Filiyos drainages in the Anatolian Black Sea basin. See Fig. 2 for the distribution of this species. Remarks. Oxynoemacheilus banarescui is distinguished from other species of the O. bergianus group by a minimum K2P distance of 2.9% to O. bergianus in the DNA barcode region and it is supported by PTP, mPTP and ASAP. We were not able to find a reliable, consistent external character to distinguish O. banarescui from any of the other species of the O. bergianus group. FIGURE 3. Oxynoemacheilus banarescui , FSJF 3122, 78 mm SL; Turkey: stream Davulga; 3169, 70 mm SL; Turkey: stream Devrekani; FSJF 3122, 78 mm SL; Turkey: stream Davulga; FSJF 3119, 67 mm SL; Turkey: Yenice River. Turan et al. (2019) published two sequences (GenBank accession number: MH469261 , MH469262 ) of O. banarescui from the stream Devrekani, closely clustering with our sequences from the same drainage. But Turan et al . (2019) submitted three additional sequences ( MH018854 , MH018855 , MH018856 ) to GenBank, which they omitted from the manuscript. Sungur (2020) downloaded all five sequences labelled as “ Oxynoemacheilus banarescui , Devrekani stream: Kızılırmak Basin” from GenBank. The Devrekani does not flow to the Kızılırmak.As Cüneyt Kaya is a co-author of the study of Turan et al. (2019) and the present study, it is now possible to clarify the reasons for this omission. Indeed, the sequences MH018854 , MH018855 , and MH018856 do not originate from fishes collected in the Kızılırmak or Devrekani drainages, but in the Büyük Melen ( 40.8358N 31.1100E ) and it is therefore no surprise that they do not cluster with O. banarescui but with O. simavicus from the Büyük Melen in our molecular dataset ( Fig. 1 ).