Common nase (Chondrostoma nasus)

Scientific name: Chondrostoma nasus Linnaeus, 1758

Common nase (Chondrostoma nasus)

The Common nase (Chondrostoma nasus) is a freshwater fish of the family Cyprinidae.

Biology

Dorsal spines (total): 3; Dorsal soft rays (total): 8-10; Anal spines: 3; Anal soft rays: 9 - 11; Vertebrae: 47 - 48. Diagnosed from congeners in Black and Caspian Sea basins by the following characters: straight mouth in individuals larger than 20 cm SL, lower lip with thick cornified sheath; dorsal fin with 9? branched rays; anal fin with 10-11? branched rays; scales on lateral line 52-66 (usually 60-63); eye large, diameter 50-65% of interorbital distance; and side lacking broad dark midlateral stripe. Differs from species of Chondrostoma, Protochondrostoma and Parachondrostoma in Atlantic, Adriatic and Mediterranean basins of France, Italy and Slovenia by having the following features: mouth straight, lower lip with thick cornified sheath; 27-36 gill rakers; anal fin with 10-11? branched rays; and pectoral, pelvic, anal and caudal fins red.. Caudal fin with 19 to 21 rays.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Chondrostoma nasus
Family
Cyprinidae (Minnows or carps)
Order
Cypriniformes (Carps)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
50.0
Common length
25.0
Environment
Freshwater; benthopelagic; potamodromous
Climate
Temperate
Distribution
Europe: Basins of Black (Danube, Dniestr, South Bug and Dniepr drainages), southern Baltic (Nieman, Odra, Vistula) and southern North Seas (westward to Meuse). Invasive or introduced in Rh?ne, Loire, H?rault, Seine (France) and Soca (Italy, Slovenia) drainages. Reports from the Drin drainage including Lakes Ohrid and Skadar represent a distinct species. In Appendix III of the Bern Convention (protected fauna).
Conservation status (IUCN)
Least Concern (LC)
Threat to humans
Harmless
Uses
Fisheries: minor commercial; aquarium: public aquariums
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (tm=3-4; tmax=15; Fec=10,000-40,000)

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Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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