The anadromous allis shad Alosa alosa has suffered dramatic population declines throughout Europe and is currently considered as endangered throughout its entire distribution range. In order to reestablish allis shad in the River Rhine, which formerly housed one of the largest and most important populations, an EU ‐ LIFE Project ‘The re‐introduction of allis shad in the Rhine system’ was started in 2007. In course of the LIFE...

After stocking with larvae from the Gironde–Garonne–Dordogne population, in 2013, three young‐of‐the‐year Allis shad Alosa alosa , probably originating from natural reproduction, were documented for the first time in a period of nearly 100 years in the River Rhine. In 2014, a further increase was observed when 57 juveniles and eight adults were caught; seven of these eight adults were derived from stocking, indicating the succ...

In 1992 a stocking programme was established to re‐introduce North Sea houting Coregonus oxyrinchus , which disappeared from the River Rhine in the 1940s, in the Lower Rhine. Juvenile North Sea houting have been stocked since 2001 in a gravel pit lake permanently connected to the Lower Rhine, and in the Lippe, a potamal tributary of the Rhine. Monitoring studies showed that the majority of the small North Sea houting left the...