“…Its origin has been exclusively from aquariumbred individuals inasmuch as native populations of this species are not yet known . Marbled crayfish has become established particularly in Germany (Chucholl et al, 2012), but the species also is reported from Croatia (Samardžić et al, 2014), Italy (Nonnis Marzano et al, 2009;Vojkovská et al, 2014), Hungary (Weiperth et al, 2015;Lőkkös et al, 2016), the Netherlands (Koese, 2008), Slovakia (Jansky and Mutkovič, 2010;Lipták et al, 2016), and Sweden (Bohman et al, 2013). Species availability in the pet market, environmental requirements, and socio-economic predictors such as gross domestic product and human population density have been recognized as key drivers behind the occurrence of marbled crayfish (Perdikaris et al, 2012;Chucholl, 2014Chucholl, , 2015.…”