Landau an der Isar (dpa/lby) - 2000 specimens of a very rare fish have been released into the wild in Lower Bavaria. The animals called Streber should be at home in the Isar, as announced by the State Office for the Environment (LfU) in Augsburg. Swedes are a type of Danube perch that was originally found in Bavaria in the Danube and in its tributaries Iller, Isar, Inn, Salzach and Lech. Now there are only leftovers. According to the LfU, the nerds are listed as "endangered" on the Red List.
In order to prevent the extinction of the maximum 20 centimeter long fish, the Bavarian State Fishing Association (LFV Bayern) and the LfU have started a joint special species aid program. This is financed to a large extent from funds from the Bavarian fishing levy. LFV President Albert Göttle said that fishermen are obliged to protect native fish species and support the program.
A few days ago, environmentalists exposed 2,000 nerds near Landau an der Isar. Similar actions have taken place in previous years. The animals had been bred in a pond of the LfU in Wielenbach (Weilheim-Schongau district). The fact that the Isar near Landau again offers good conditions for the nerd is the result of renaturation measures by the Landshut Water Management Office.
According to the information, the nerd is a nocturnal fish that mainly lives in the current on the gravelly bottom of the water. Because his swim bladder has atrophied, he moves forward more jerkily and hopping. Swedes spawn from March to April. The reasons for their decline include the expansion of rivers and rising water temperatures due to climate change.