Coregonus bavaricus

The Ammersee whitefish (Coregonus bavaricus ) is a rare species of the genus Coregonus. It is endemic in Bavaria Ammersee along the villages Unterdießen, Utting and early village.

Features

The Ammersee whitefish reached a standard length 241-245 mm. The number of gill rakers is 18 to 30 The short pectoral fin reaches the edge of the mouth, when it is folded forward. The head and the fins are short. The mouth is nearly terminal and the upper jaw reaches the anterior margin. The snout is blunt. The body and fin coloration of preserved specimens in ethanol is silvery - yellow. In a captive in 2003 individual the pectoral fin has a light gray approach.

Habitat and behavior

The Ammersee whitefish inhabit the deeper waters of Lake Ammersee to depths between 60 and 85 meters. In the summer they remain at depths of 60 meters. The spawning season is usually between 15 June and 15 July. The spawn is deposited at depths between 40 and 50 meters on the ground.

Endangering

1909 Ammersee whitefish has been described as economically important food fish. 1933 was the German ichthyologist Erich Wagler out in studies on the Ammersee, that the population of this species had plummeted, which was mainly due to the overfishing of smaller individuals. Wagler also noted that the straightening of the inflow bunting would have a negative impact on the living conditions of the Ammersee - Kilchs. At the beginning of the 1950s the Ammersee was heavily eutrophicated. Through the construction of a ring channel in 1971, which keeps the wastewater from the Ammersee, the water quality could be improved again. Today the population has probably stabilized at a very low level. Between 1951 and 2003, only three specimens were caught. The IUCN classifies the Ammersee whitefish in the category " Endangered" ( critically endangered ) a.

57091
de