| Nases | |
|---|---|
| Common Nase, C. nasus. Note mouth to the lower left of eye. |
|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Superclass: | Osteichthyes |
| Class: | Actinopterygii |
| Subclass: | Neopterygii |
| Infraclass: | Teleostei |
| Superorder: | Ostariophysi |
| Order: | Cypriniformes |
| Superfamily: | Cyprinioidea |
| Family: | Cyprinidae |
| Subfamily: | Leuciscinae |
| Genus: | Chondrostoma Agassiz, 1832 |
| Species | |
|
See text |
|
Chondrostoma (from the Ancient Greek roots χόνδρος (khondros, “lump”) + στόμα (stoma, “mouth”) = “lump-mouth”) is a genus of ray-finned fish in the family Cyprinidae. They are commonly known as nases, though this term is also used locally to denote particular species, most frequently the Common Nase (C. nasus). The common name refers to the protruding upper jaw of these fishes; it is derived from the German term Nase, meaning "nose."
Several species have very restricted ranges. Some of these endemics are very rare nowadays, and at least one species is globally extinct.
Contents |
In 2007 it was determined that the presumed monophyletic group consisted of 6 at least partly independent lineages of Leuciscinae, meaning that the rasping feeding apparatus evolved nore than once. It was proposed to split the genus in 6 in consequence: Achondrostoma, Chondrostoma, Iberochondrostoma, Pseudochondrostoma, Protochondrostoma and Parachondrostoma. But at least Achondrostoma and Iberochondrostoma may not be separable.[1] After the split, there are 21 remaining species in this genus.
The following species are currently considered to be members of this genus: