Several decades of two invasive fish species (Perccottus glenii, Pseudorasbora parva) of European concern in Lithuanian inland waters; from first appearance to current state

Following their first appearance, the invasive fishes Pseudorasbora parva and Perccottus glenii have been in Lithuania for several decades. However, until recently, information relating to distribution secondary spread was limited. For this reason, suitable habitats these fish species were surveyed presence across entire country. Additionally, all previously reported records on of summarized. Results revealed P. be widely distributed within country with abundant populations species. The recent is restricted only a few water bodies. It shown that both are associated human mediated transfer, while no natural dispersal observed. results study suggest invasion Lithuanian inland waters by still ongoing, occurrence numerous bodies, which devoid species, now seems probable. Demonstrated vectors introductions highlight importance controlling screening activities related aquaculture, recreational angling ornamental trade order restrict further expansion region.