It seems that the major factor of drastic decreese in Europen eel population since 1980s has been swimbladder parasite desrupying eel's lifecycle [1] [1] https

It seems that the major factor of drastic decreese in Europen eel population since 1980s has been swimbladder parasite desrupying eel's lifecycle [1] [1] https://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-014-0504-8 https://parasitesandvectors.biomedcentral.com/articles/10.11...