New record of the spiny-cheek crayfish, Orconectes limosus (Rafinesque, 1817) in the catchment of Lake Balaton (Hungary)

Lake Balaton in Hungary is the biggest shallow lake in Europe and has two main invasion pathways: a canal (Sio Canal), which connects the lake to the watershed of the River Danube and fishponds on the south of the lake. The spiny-cheek crayfish was intentionally introduced to Hungary in the 1950s for farming, and was first detected in the wild in the Ujpest-branch of the River Danube in 1985. Its occurrence in the Sio Canal was first reported in 2004, and a dead specimen was found in Lake Balaton. In our study the species is described from a fish pond with a possible connection to the lake.