“…This species is known for the production of CYN and STXs in warmer regions but, so far, this was not confirmed in Europe. Recent studies, however, revealed the ability of this cyanobacterium to produce unknown metabolites causing toxic effects (Poniedziałek et al, 2015). Among other alien species that occur more and more frequently in Europe are Chrysosporum bergii (Ostenfeld) E. Zapomělová, O. Skácelová, P. Pumann, R. Kopp & E. Janeček, Chrysosporum ovalisporum (Forti) E. Zapomělová, O. Skácelová, P. Pumann, R. Kopp & E. Janeček, and Sphaerospermopsis aphanizomenoides (Forti) Zapomělová, Jezberová, Hrouzek, Hisem, Reháková & Komárková.…”