Stock Photo - PRODUCTION - 19 October 2022, Brandenburg, Reitwein: Fisheries biologist Jan Hallermann (l) from the Leibnitz Institute of Freshwater Ecology and Inland Fisheries (IGB) measures a chub caught from the Oder River near Reitwein and then returns it to the water. Employees of the IGB carry out a fish sampling here, in which they also want to detect occurrences of the Baltic Golden Biter (Sabanejewia baltica). A population of about 500 individuals was last observed in 2021; it was considered the westernmost occurrence of the fish, which is native to Eastern Europe and Western Asia and grows up to 12 centimeters in length. (to dpa ""Environmental disaster in the Oder: Where is the Baltic Golden Bite?) Photo: Frank Hammerschmidt/dpa. - Reitwein/Brandenburg/Germany