University of Gdansk, Hel Marine Station, Morska 2, 84-150 Hel, Poland. Since this species is rare, no recent data are available.
Some more information are available for the twaite shad.
This is not the real situation for both species in the past as well as at present. In the presentation a more detailed description of the historical knowledge will be given based on literature and information from zoological collections. In addition there are new records and observations on both species from the Baltic Sea made during the last ten years. Only from Denmark some older evident records exist concerning the transition area between the Skagerrak and the Baltic Sea. Many records of allis shads from the German literature are incorrect, since the different German local names are confusing and did not allow to distinguish between the two species of shads.