2017 Volume 11 Pages 75-81
Seven specimens of the non-indigenous Wuchang bream Megalobrama amblycephala (Cyprinidae) were collected from the inner part of Edosaki-iri inlet in Lake Kasumigaura, Ibaraki Prefecture, central Japan, from 2009 to 2017. Four of these specimens, aged successively 1 to 2 years , were collected repeatedly in 2016 and 2017 indicating that this alien species has begun reproduction in the lake. Lake Kasumigaura, in the Kanto region of Japan, has rich fish diversity and many endangered species. The establishment of M. amblycephala will likely cause unpredictable ecological and economic problems. Attention from stakeholders and early control are necessary to prevent further range expansion of the Wuchang beam.
