stormwater ponds

These aquatic invaders pose a big risk in Alberta

These aquatic invaders pose a big risk in Alberta

Nicholas Mandrak, a professor at the University of Toronto who has spent much of his career studying invasive fish species in Canada, says impacts on water systems vary by species. Prussian carp, like goldfish and common carp, will uproot vegetation in order to find food. When that happens, the fish kill vegetation that may act as nutrient sinks in sewage lagoons or drinking water ponds.