Abstract: On the basis of monitoring undertaken in 300 lakes since 1994, the recent stocking situation for freshwater crayfish in northeastern Germany (Uckermark) and northwestern Poland (Szczecin area) is described. The two native species Astacus astacus (L.) and Astacus leptodactylus (Esch.) were found in five and two sites, respectively, while the introduced species Orconectes limosus (Raf.) and Pacifastacus leniusculus (Dana) were found in 214 and two sites. No crayfish were present in 77 sites.