Invasive Species: Spiny-cheek crayfish
The spiny-cheek crayfish (Orconectes limosus) originated in the east of North America and was brought to Europe at the end of the 19th century. The up to 12 cm long crayfish is widespread in various countries of middle Europe. They transmit a specific plague that threatens local crayfish species that don't have any defense mechanisms against it. The reproduction of the species has a direct impact on plant and animal populations.