 The mysid's spread has been facilitated via its deliberate introduction into reservoirs on the Volga and Dnieper rivers in the 1950s and 1960s to serve as fish food.Despite its spread throughout Europe, it is considered to be endangered in some parts of its indigenous range (Ukraine).The species has entered the Great Lakes via the ballast water exchange; it was reported for the first time in 2006 from two disjunct regions