Chondrostoma

Chondrostoma 'lump' + wikt:στόμα is a genus of ray-finned fish in the family Leuciscidae. They are commonly known as nases, although this term is also used locally to denote particular species, most frequently the common nase.
The common name refers to the protruding upper jaw of these fishes; it is derived from the German term Nase 'nose'.
Several species have a very restricted range. Some of these endemics are very rare nowadays, and at least one species is globally extinct.

Systematics

In 2007 it was determined that the presumed monophyletic group consisted of six at least partly independent lineages of Leuciscinae, meaning that the rasping feeding apparatus evolved more than once. It was proposed to split the genus in six in consequence: Achondrostoma, Chondrostoma, Iberochondrostoma, Pseudochondrostoma, Protochondrostoma and Parachondrostoma. But at least Achondrostoma and Iberochondrostoma may not be separable.

Species

These are the currently recognized species in this genus:

Chondrostoma angorense Elvira, 1987
Chondrostoma beysehirense Bogutskaya, 1997
Chondrostoma ceyhanense Küçük, Turan, Güçlü, Mutlu & Çiftci, 2017
Chondrostoma colchicum Derjugin, 1899
Chondrostoma cyri Kessler, 1877
Chondrostoma esmaeilii Eagderi, Jouladeh-Roudbar, Birecikligil, Çiçek & Coad 2017
Chondrostoma holmwoodii
Chondrostoma kinzelbachi Krupp, 1985
Chondrostoma knerii Heckel, 1843
Chondrostoma kubanicum Berg, 1914
Chondrostoma meandrense Elvira, 1987
Chondrostoma nasus
Chondrostoma ohridanum Karaman, 1924
Chondrostoma orientale Bianco & Bănărescu, 1982
Chondrostoma oxyrhynchum Kessler, 1877
Chondrostoma phoxinus Heckel, 1843
Chondrostoma prespense Karaman, 1924
Chondrostoma regium
Chondrostoma scodrense Elvira, 1987
Chondrostoma smyrnae Küçük, Çiftçi, Güçlü & Turan, 2021
Chondrostoma soetta Bonaparte, 1840
Chondrostoma toros Küçük, Turan, Güçlü, Mutlu & Çiftci, 2017
Chondrostoma turnai Güçlü, Küçük, Turan, Çiftçi & Mutlu, 2018
Chondrostoma vardarense Karaman, 1928
Chondrostoma variabile Yakovlev, 1870