taxonID	type	description	language	source
900AED5FFFAA8F4CFF7A188FFDEE5962.taxon	discussion	We examined 21 individuals of A. nasreddini from two sites and 30 individuals of A. escherichii from one site, analysing 29 morphometric (Table 1) and eight meristic characters (Table 2). An additional 351 A. escherichii were visually examined for marked differences in body shape. All examined characters were found to be largely overlapping (Table 1 and 2). Moreover, we found no difference in the color patterns and the scale coverage of the ventral keel.	en	Bayçelebi, Esra, Turan, Davut, Kaya, Cüneyt, Freyhof, Jörg (2020): Alburnus nasreddini, a synonym of A. escherichii (Teleostei: Leuciscidae). Zootaxa 4894 (1): 123-132, DOI: 10.11646/zootaxa.4894.1.7
900AED5FFFAA8F4CFF7A188FFDEE5962.taxon	distribution	Distribution. Alburnus escherichii is native to the Sakarya River drainage where it is widespread. It is also widespread in the Eber, Akşehir, Karamık and Çavuşcu (Ilgın) lake basins including the Selevir and Seyitler reservoirs. There are few records from the upper parts of the Kızılırmak and Yeşilırmak River drainages (Black Sea basin) and this species was introduced and has well-established populations in the Manavgat River (Mediterranean Sea basin) and in the Lake Beyşehir basin (Freyhof & Özuluğ 2009; Özuluğ et al. 2018) (Fig. 1 and 5). It cannot be fully excluded that populations in the Kızılırmak and Yeşilırmak Rivers might be introduced, as A. escherichii seems to be an invasive species in Turkey, most likely spread with fish stocked from fish farms to the wild.	en	Bayçelebi, Esra, Turan, Davut, Kaya, Cüneyt, Freyhof, Jörg (2020): Alburnus nasreddini, a synonym of A. escherichii (Teleostei: Leuciscidae). Zootaxa 4894 (1): 123-132, DOI: 10.11646/zootaxa.4894.1.7
900AED5FFFAA8F4CFF7A188FFDEE5962.taxon	materials_examined	Material examined and additional records without voucher materials. Sakarya River drainage: FFR 00827, 80, 52 – 101 mm SL; Ankara prov.: stream Öz at Kızılcahamam, 40.469 E 32.659 N. — FFR 00887, 82, 36 – 102 mm SL; Ankara prov.: stream İlhanlı at Ayaş, 40.097 N 32.251 E. — FFR 04610, 24, 47 – 118 mm SL; Ankara prov.: stream Berçin at Kızılcahamam, 40.471 N 32.656 E. — FFR 04616, 18, 50 – 85 mm SL; K ̹ tahya prov.: stream Porsuk at 10 km southwestern of K ̹ tahya, 39.350 N 30.038 E. — FFR 04617, 12, 65 – 81 mm SL; Ankara prov.: stream Kirmir at 3 km north of G ̹ d ̹ l, 40.236 N 32.261 E. — FSJF 1921, 5, 77 – 85 mm SL; Bilecik prov.: a tributary of Sakarya River, 15 km northern of Boz ̹ y ̹ k, 40.039 N 30.122 E. — FSJF 1964, 23, 69 – 102 mm SL; Sakarya prov.: Sakarya River at Doğançay, 40.627 N 30.333 E. — FSJF 2489, 7, 88 – 100 mm SL; Sakarya prov.: stream Mudurnu at Akyazı, 40.714 N 30.563 E. — FSJF 2627, 7, 79 – 95 mm SL; Ankara prov.: stream Bayındır at Çeltikçi, 40.324 N 32.467 E. — FSJF 3062, 11, 57 – 95 mm SL; Sakarya prov.: stream Doğançay at Doğançay, 40.627 N 30.333 E. Additional records. Kütahya prov.: stream Pınarcık at Pınarcık village, 39.0164 N 29.975 E. — Eskişehir prov.: stream Allıkova at 15 km southern of İnönü, 39.682 N 30.154 E. — Sakarya prov.: Sakarya River at 8 km northern of Gevye, 40.596 N 30.323 E. — Kütahya prov.: a tributary of Sakarya River 2 km southeastern of Soğukçeşme, 39.577 N 30.083 E. — Eskişehir prov.: a tributary of Sakarya River at İnönü, 39.817 N 30.132 E. — Sakarya prov.: Sakarya River at Gevye, 40.538 N 30.299 E. — Eskişehir prov.: a tributary of stream Seydi at Hamidiye, 39.576 N 30.907 E. — Eskişehir prov.: stream Seydi at Saithalimpaşa, 39.415 N 30.123 E. — Afyonkarahisar prov.: a tributary of Sakarya River 15 km west of Emirdağ, 39.050 N 31.323 E. — Afyonkarahisar prov.: stream Pınarbaşı 27 km south of Emirdağ, 39.267 N 31.148 E. — Eskişehir prov.: Sakarya River at Çandır, 39.277 N 31.332 E. — Eskişehir prov.: a tributary of Sakarya River at Göktepe, 39.151 N 31.614 E. — Eskişehir prov.: Sakarya River at Ahiler, 39.195 N 31.622 E. — Ankara prov.: stream Koca, upper Sarıyer Dam at Davutoğlan, 40.133 N 31.639 E. — Konya prov.: drying canal a tributary of Sakarya River at Küçükhasan, 38.958 N 31.831 E. — Ankara prov.: stream Kirmir at Harmancık, 40.090 N 31.889 E. — Bursa prov.: stream İncirli at Köprühisar, 40.282 N 30.122 E. — Eskişehir prov.: a tributary of Çukurhisar Pond at Çukurhisar, 39.282 N 30.122 E. — Eskişehir prov.: Outlet of Porsuk Dam, 39.607 N 30.265 E. — Bursa prov.: stream Göksu at Köprühisar, 40.282 N 29.797 E. — Eskişehir prov.: a tributary of Sakarya River 2 km north of Ahiler, 39.215 N 31.622 E. — Ankara prov.: Aşartepe Dam at Çiğdemci, 40.144 N 32.389 E. Kızılırmak River drainage: FFR 00980, 3, 55 – 105 mm SL; Sivas prov.: Kızılırmak River at Zara, 39.961 N 37.739 E. Yeşilırmak River drainage: FFR 00986, 26, 81 – 111 mm SL; Erzincan prov.: stream Köroğlu at 3 km north of Refahiye, 39.919 N 38.759 E. — FFR 04692, 3, 93 – 108 mm SL; Erzincan prov.: stream Köroğlu at 1 km north of Refahiye, 39.911 N 38.767 E. Lake Beyşehir basin: FFR 00801, 28, 57 – 131 mm SL; Konya prov.: stream Kuğuluçay at Seydişehir, 37.379 E 31.878 N. — FFR 04628, 28, 57 – 131 mm SL; Konya prov.: irrigation canal at 5 km southwestern of Seydişehir, 37.379 N 31.878 E. — FFR uncat., 2, 60 – 70 mm SL; Konya prov.: stream Sarıöz at Beyşehir, 37.749 N 31.780 E. — FSJF 2618, 27, 81 – 124 mm SL; Konya prov.: Outlet of Lake Beyşehir below dam in the Beyşehir at Beyşehir, 37.680 N 31.723 E. Additional records. Konya prov.: stream B ̹ y ̹ kköpr ̹ at Üst ̹ nler, 37.621 N 31.590 E. — Konya prov.: stream Büyükçay at Adaköy, 37.512 N 31.590 E. — Konya prov.: Karstik spring of Beyşehir 10 km north of Sarayönü, 38.353 N 32.367 E. — Stream Eylikler at Beyşehir, 710 N 31.736 E. Lake Akşehir basin: FSJF 1911, 11, 68 – 98 mm SL; Konya prov.: stream Ortaköy at Ortaköy, 38.447 N 31.518 E. Additional records. Afyonkarahisar prov.: Inlet water of Lake Akşehir at Üçkuyu, 38.670 N 31.530 E. — Konya prov.: Lake Akşehir at Akşehir, 38.456 N 31.416 E. — Konya prov.: a tributary of Lake Akşehir at Karabulut, 38.440 N 31.457 E. — Konya prov.: Lake Akşehir 10 km west of Pazarkaya, 38.530 N 31.465 E. Lake Karamik basin: Additional records. Afyonkarahisar prov.: Lake Karamik Bataklığı at Çayıryazı, 38.384 N 30.751 E. — Afyonkarahisar prov.: Lake Karamik Bataklığı at Armutlu, 38.418 N 30.820 E Lake Eber basin: FFR 04629, 10, 63 – 106 mm SL; Afyonkarahisar prov.: creek Kali at Inli, 38.517 N 30.773 E. — FFR 08648, 10, 72 – 90 mm SL; Afyonkarahisar prov.: creek Kali, a tributary to Lake Eber, 38.448 N 30.643 E. Additional records. Afyonkarahisar prov.: creek Kali 5 km east of İnli, 38.541 N 30.845 E. — Afyonkarahisar prov.: creek Kali at Maltepe, 38.602 N 30.894 E. — Afyonkarahisar prov.: a tributary of Selevir Reservoir at Şuhut, 38.475 N 30.682 E. — Afyonkarahisar prov.: creek Kali 5 km west of Pazarağaç, 38.576 N 30.872 E. — Afyonkarahisar prov.: Lake Eber at Derekarabağ, 38.689 N 31.162 E. — Afyonkarahisar prov.: Lake Eber at Eber, 38.626 N 31.151 E. Lake Çavuşcu (Ilgın) basin: FFR 04641, 11, 59 – 104 mm SL; Konya prov.: stream Deliköyboğazı at 10 km south of Lake Ilgın, 38.237 N 31.883 E. — FSJF 2577, 13, 61 – 93 mm SL; Konya prov.: stream Battal 5 km south of Ilgın at road to Beyşehir, 38.236 N 31.880 E. — FSJF 3092, 1, 67 mm SL; Konya prov.: Ilgın Lake, 38.321 N 31.890 E. Additional records. Konya prov.: stream Deliköyboğazı at 6 km north of Ilgın, 38.236 N 31.880 E. — Konya prov.: Lake Ilgın at Gedikören, 38.321 N 31.890 E. — Konya prov.: a tributary of stream Deliköyboğazı at Ilgın, 38.240 N 31.880 E. — Konya prov.: a tributary of Lake Ilgın at Ilgın, 38.270 N 31.856 E. — Konya prov.: stream Deliköyboğazı at 6 km north of Ilgın, 38.236 N 31.880 E. — Konya prov.: stream Deliköyboğazı at 5 km north of Ilgın, 38.237 N 31.883 E. — Konya prov.: stream Deliköyboğazı at 6 km north of Ilgın, 38.236 N 31.880 E. Akarçay Basin: Additional records. Afyonkarahisar prov.: a tributary of Selevir Reservoir at Şuhut, 38.511 N 30.705 E. — Afyonkarahisar prov.: Selevir Reservoir at Şuhut, 38.475 N 30.682 E. — Afyonkarahisar prov.: Seyitler Reservoir at Gebeceler, 38.794 N 30.789 E. Karman closed basin: Additional records. Karaman prov.: stream Buğdaylı at Ayrancı, 37.312 N 33.753 E. — Not preserved, Karaman prov.: stream Uludere at Ayrancı. 37.289 N 33.791 E. Mediterranean Sea Basin: FFR 04680, 59, 49 – 119 mm SL; Antalya prov.: stream Ilıca at Ilıca, 36.818 N 31.353 E. — FSJF 3118, 4, 78 – 82 mm SL; Antalya prov.: stream Manavgat below Oymapınar Dam, 36.899 N 31.527 E. Additional records. Antalya prov.: Manavgat Dam at Manavgat, 36.878 N 31.522 E. — Antalya prov.: stream Karpuz at Hacıobası, 36.729 N 31.594 E.	en	Bayçelebi, Esra, Turan, Davut, Kaya, Cüneyt, Freyhof, Jörg (2020): Alburnus nasreddini, a synonym of A. escherichii (Teleostei: Leuciscidae). Zootaxa 4894 (1): 123-132, DOI: 10.11646/zootaxa.4894.1.7
