Lau (fish)

from Wikipedia, the free encyclopedia
Lukewarm
Protochondrostoma genei.jpg

Lau ( Protochondrostoma genei )

Systematics
without rank: Otophysa
Order : Carp-like (Cypriniformes)
Subordination : Carp fish-like (Cyprinoidei)
Family : White fish (Leuciscidae)
Genre : Protochondrostoma
Type : Lukewarm
Scientific name of the  genus
Protochondrostoma
Robalo , Almada , Levy & Doadrio , 2007
Scientific name of the  species
Protochondrostoma genei
( Bonaparte , 1839)
Distribution area of ​​the Lau

The lau ( Protochondrostoma genei ) is a European freshwater fish found in northern Italy and Slovenia in the rivers Vomano , Tronto , Esino , Cesano , Metauro , Foglia , Po , Adige , Brenta , Piave , Livenza , Tagliamento and Isonzo . Reports of occurrences in the Upper Rhine , Upper Danube and Inn are uncertain and poorly documented.

features

The lau resembles the nose . In most cases, it becomes 15 to 20 cm long and can reach a maximum length of 30 cm. Its body is elongated and only slightly flattened on the sides. The body height is 20 to 27% of the standard length . The back is light and greenish gray, the sides of the body and the belly silvery, the fins yellowish white, their edges reddish. Above the sideline , a dark longitudinal band extends from the rear edge of the gill cover to the tail fin root. The mouth is slightly below, the narrow lower lip keratinized. On the pharyngealia there is a row of teeth with five, very rarely six teeth.

Way of life

The way of life of the Lau has hardly been researched. It lives socially and close to the ground in the barbel region of larger and medium-sized, oxygen-rich rivers with gravel and scree bottoms and feeds mainly on small invertebrates, as well as algae. The breeding season extends from March to June.

literature

  • Anton Lelek: The Freshwater Fishes of Europe, Volume 9, Threatened Fishes of Europe. Aula-Verlag, Wiesbaden, ISBN 3-89104-048-2
  • Uwe Hartmann: freshwater fish. Recognize & determine (= Steinbach's natural guide ). 2nd, unchanged edition. Ulmer, Stuttgart 2003, ISBN 3-8001-4296-1 .

Web links