Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2021-05-19
Page range: 135–150
Abstract views: 257
PDF downloaded: 11

Oxynoemacheilus nasreddini, a new nemacheilid loach from Central Anatolia (Teleostei: Nemacheilidae)

Hacettepe University, Faculty of Science, Biology Department, Beytepe Campus, 06800 Ankara, Turkey.
Recep Tayyip Erdogan University, Faculty of Fisheries, 53100 Rize, Turkey.
Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, 10115 Berlin, Germany.
Pisces Freshwater fish taxonomy Middle East


Oxynoemacheilus nasreddini, new species, from Lake Akşehir, Eber, Eğirdir, and Ilgın basins in Central Anatolia is distinguished from other species of Oxynoemacheilus in Central Anatolia by having irregularly shaped blotches on flank; 2–4 dark-brown bands on caudal fin; a slender body, and an emarginate caudal fin in which the shortest middle caudal-fin ray is 76–91% of the longest ray of the upper caudal-fin lobe. Molecular data suggest that the new species is closely related to O. mediterraneus from the Aksu and Köprüçay drainages. Although the two species are separated by only a minimum K2P distance of 1.2% in the mtDNA COI barcode region, they are well distinguished morphologically. The situation is complicated by loaches from Lake Eğirdir basin that are identified as O. nasreddini by their morphological character states but are only distinguished from O. mediterraneus by a minimum K2P distance of 0.2% in the mtDNA COI barcode region.



  1. Akın, Ç., Bilgin, C.C. & Bilgin, M. (2010) Discordance between ventral colour and mtDNA haplotype in the water frog Rana (ridibunda) caralitana, 1988 Arıkan. Amphibia-Reptilia, 31, 9–20.

    Biomatters (2013) Geneious Pro. Available from: (accessed 15 August 2018)

    Çiçek, E. (2020a) Seminemacheilus dursunavsari, a new nemachelid species (Teleostei: Nemacheilidae) from Turkey. Iranian Journal of Ichthyology, 7 (1), 68–77. Available from: (accessed 30 March 2020)

    Çiçek, E. (2020b) Seminemacheilus dursunavsari, a new nemachelid species (Teleostei: Nemacheilidae) from Turkey. Iranian Journal of Ichthyology, 7 (1), 68–77. Available from: (accessed 29 July 2020)

    Çiçek, E., Eagderi, S. & Sungur, S. (2018) Oxynoemacheilus veyseli, a new nemacheilid species from the upper Aras River drainage of Turkey (Teleostei: Nemacheilidae). Iranian Journal of Ichthyology, 5 (3), 232–242.

    Değirmenci, M. & Günay, G. (1992) Analysis of hydrologic relations between Eğirdir-Beyşehir-Suğla lakes system and adjacent basins by means of remote sensing techniques (southern Turkey). Environmental Geology and Water Sciences, 19, 41–45.

    Eagderi, S., Jalili, P. & Çiçek, E. (2018) Oxynoemacheilus elsae, a new species from the Urmia Lake basin of Iran (Teleostei: Nemacheilidae). FishTaxa, 3 (2), 453–459.

    Edgar, R.C. (2004) MUSCLE: Multiple sequence alignment with high accuracy and high throughput. Nucleic acids research, 32, 1792–1797.

    Ekmekçi, M. (1987) Beyşehir Gölü’nün komşu havza akımlarına olan etkilerinin araştırılması. Master Thesis, Hacettepe Üniversitesi, Fen Bilimleri Enstitüsü, Ankara, 143 pp. [in Turkish]

    Ekmekçi, M. (1993) A conceptual model for the Beyşehir Lake karst system. IAHS Publication, 207, 245–252.

    Erk’akan, F., Nalbant, T.T. & Özeren, S.C. (2007) Seven new species of Barbatula, three new species of Schistura and a new species of Seminemacheilus (Ostariophysi: Balitoridae: Nemacheilinae) from Turkey. Journal of Fisheries International, 2, 69–85.

    Erk’akan, F., Özeren, S.C. & Nalbant, T.T. (2008) Two new species of stone loaches from Turkey (Teleostei: Nemacheilidae). Journal of Fisheries International, 3, 115–119.

    Erk’akan, F. (2012) Two new Oxynoemacheilus (Teleostei: Nemacheilidae) species from western Turkey. Research Journal of Biological Sciences, 7 (2), 97–101.

    Fagundes, P.C., Pereira, E.H.L. & Reis, R.E. (2020) Iterative taxonomic study of Pareiorhaphis hystrix (Siluriformes, Loricariidae) suggests a single, yet phenotypically variable, species in south Brazil. PLoS One, 15, e0237160

    Ferguson, J.W.H. (2002) On the use of genetic divergence for identifying species. Biological Journal of the Linnean Society, 75, 509–516.

    Freyhof, J., Erk’akan, F., Özeren, C. & Perdices, A.J. (2011) An overview of the western Palaearctic loach genus Oxynoemacheilus (Teleostei: Nemacheilidae). Ichthyological Exploration of Freshwaters, 22, 301–312.

    Freyhof, J., Geiger, M.F., Golzarianpour, K. & Patimar, R. (2016) Sasanidus, a new generic name for Noemacheilus kermanshahensis Bǎnǎrescu & Nalbant, with discussion of Ilamnemacheilus and Schistura (Teleostei; Nemacheilidae). Zootaxa, 4107 (1), 65–80.

    Freyhof, J., Kaya, C. & Turan, D. (2017) Oxynoemacheilus kentritensis, a new species from the upper Tigris drainage in Turkey with remarks on O. frenatus (Teleostei: Nemacheilidae). Zootaxa, 4258 (6), 551–560.

    Freyhof, J. & Geiger, M.F. (2017) Oxynoemacheilus zarzianus, a new loach from the Lesser Zab River drainage in Iraqi Kurdistan (Teleostei: Nemacheilidae). Zootaxa, 4273 (2), 258–270.

    Freyhof, J. & Abdullah, Y.S. (2017) Two new species of Oxynoemacheilus from the Tigris drainage in Iraqi Kurdistan (Teleostei: Nemacheilidae). Zootaxa, 4238 (1), 73–87.

    Freyhof, J., Baycelebi, E. & Geiger, M. (2018a) Review of the genus Cobitis in the Middle East, with the description of eight new species (Teleostei: Cobitidae). Zootaxa, 4535, (1), 1–75.

    Freyhof, J., Kaya, C., Bayçelebi, E., Geiger, M. & Turan, D. (2018b) Generic assignment of Leuciscus kurui Bogutskaya from the upper Tigris drainage, and a replacement name for Alburnus kurui Mangit & Yerli (Teleostei: Leuciscidae). Zootaxa, 4410 (1), 113–135.

    Freyhof, J., Kaya, C., Turan, D. & Geiger, M.F. (2019) Review of the Oxynoemacheilus tigris group with the description of two new species from the Euphrates drainage (Teleostei: Nemacheilidae). Zootaxa, 4612 (1), 29–57.

    Freyhof, J. & Geiger, M.F. (2021) Oxynoemacheilus shehabi, a new nemacheilid loach from the upper Orontes in southern Syria (Teleostei: Nemacheilidae). Zootaxa, 4908 (4), 571–583.

    Freyhof, J., Kaya, C., Epitashvili, G. & Geiger, M.F. (2021a) Oxynoemacheilus phasicus, a new nemacheilid loach from the eastern Black Sea basin with some remarks on other Caucasian Oxynoemacheilus (Teleostei: Nemacheilidae). Zootaxa, 4952 (1), 135–151.

    Freyhof, J., Yoğurtçuoğlu, B. & Kaya, C. (2021b) Oxynoemacheilus sarus, a new nemacheilid loach from the lower Ceyhan and Seyhan in southern Anatolia (Teleostei: Nemacheilidae). Zootaxa, 4964 (1), 123–139.

    Geiger, M.F., Herder, F., Monaghan, M.T., Almada, V., Barbieri, R., Bariche, M., Berrebi, P., Bohlen, J., Casal-Lopez, M., Delmastro, G.B., Denys, G.P.J., Dettai, A., Doadrio, I., Kalogianni, E., Kärst, H., Kottelat, M., Kovačić, M., Laporte, M., Lorenzoni, M., Marčić, Z., Özuluğ, M., Perdices, A., Perea, S., Persat, H., Porcelotti, S., Puzzi, C., Robalo, J., Šanda, R., Schneider, M., Šlechtová, V., Stoumboudi, M., Walter, S. & Freyhof, J. (2014) Spatial heterogeneity in the Mediterranean Biodiversity Hotspot affects barcoding accuracy of its freshwater fishes. Molecular Ecology Resources, 14, 1210–1221.

    Ivanova, N.V., Zemlak, T.S., Hanner, R.H. & Hebert, P.D.N. (2007) Universal primer cocktails for fish DNA barcoding. Molecular Ecology Notes, 7, 544–548.

    Kaya, C., Turan, D., Bayçelebi, E., Kalayci, G. & Freyhof, J. (2020) Oxynoemacheilus cilicicus, a new nemacheilid loach from the Göksu River in southern Anatolia (Teleostei: Nemacheilidae). Zootaxa, 4808 (2), 284–300.

    Kaya, C., Yoğurtçuoğlu, B. & Freyhof, J. (2021) Oxynoemacheilus amanos, a new nemacheilid loach from the Orontes River drainage (Teleostei: Nemacheilidae). Zootaxa, 4938 (5), 559–570.

    Kottelat, M. (1990). Indochinese nemacheilines. A revision of nemacheiline loaches (Pisces: Cypriniformes) of Thailand, Burma, Laos, Cambodia and Southern Vietnam. Verlag Dr, Friedrich Pfeil, München, 262 pp.

    Kottelat, M. & Freyhof, J. (2007) Handbook of European freshwater fishes. Kottelat, Cornol & Freyhof, Berlin, xiv + 646 pp.

    Kottelat, M. (2012) Conspectus Cobitidum: an inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei). Raffles Bulletin of Zoology, 26 (Supplement), 1–199.

    Kumar, S., Stecher, G., Li, M., Kınyaz, C. & Tamura, K. (2018) MEGA X: Molecular Evolutionary Genetics Analysis across computing platforms. Molecular Biology and Evolution, 35, 1547–1549.

    Kunz, W. (2007) Do species exist? Principles of taxonomic classification. Wiley-Blackwell, Weinheim, xxxiii + 245 pp.

    Malabarba, L.R., Chuctaya, J., Hirschmann, A., Oliveira, E.B. & Thomaz, A.T. (2021) Hidden or unnoticed? Multiple lines of evidence support the recognition of a new species of Pseudocorynopoma (Characidae: Corynopomini). Journal of Fish Biology, 98, 219–236.

    Saitou, N. & Nei, M. (1987) The Neighbor-Joining Method—a new method for reconstructing phylogenetic trees. Molecular Biology and Evolution, 4, 406–425.

    Sungur, S., Jalili, P. & Eagderi, S. (2017) Oxynoemacheilus ciceki, new nemacheilid species (Teleostei, Nemacheilidae) from the Sultan Marsh, Kayseri Province, Turkey. Iranian Journal of Ichthyology, 4 (4), 375–383.

    Swofford, D.L. (2002) PAUP*. Phylogenetic Analysis Using Parsimony (*and Other Methods). Version 4. Sinauer Associates, Sunderland, Massachusetts. [program]

    Tamura, K. & Nei, M. (1993) Estimation of the number of nucleotide substitutions in the control region of mitochondrial DNA in humans and chimpanzees. Molecular biology and evolution, 10 (3), 512–526.

    UNDP (1983) Technical Report: Karst waters of southern Turkey. United Nations Development Programme, New York, 97 pp.

    Yeates, D.K., Seago, A., Nelson, L., Cameron, S.L., Joseph, L. & Trueman, J.W.H. (2011) Integrative taxonomy, or iterative taxonomy? Systematic Entomology, 36, 209–217.

    Yoğurtçuoğlu, B. & Freyhof, J. (2018) Aphanius irregularis, a new killifish from south-western Anatolia (Cyprinodontiformes: Aphaniidae) Zootaxa, 4410 (2), 319–330.

    Yoğurtçuoğlu, B., Kaya, C., Geiger, M.F. & Freyhof, J. (2020) Revision of the genus Seminemacheilus, with the description of three new species (Teleostei: Nemacheilidae). Zootaxa, 4802 (3), 477–501.