abstract:Perca fluviatilis, commonly known as the European perch, perch, redfin perch or English perch, is a predatory species of perch found in Europe and Asia. The species is a popular quarry for anglers, and has been widely introduced beyond its native area, into Australia, New Zealand, and South Africa.
In their university-funded study, Dr. Brodin and his colleagues first tested wild Europeanperch caught from a midsize stream in Sweden called the River Fyris and found that levels of the drug in fish tissue were more than six times the level commonly detected in the water.