Sometime over the weekend of 23-24 July 2011, thousands of fish died in three rivers in western Prince Edward Island, the largest kill in decades. Erin Moore / CBC

July 27 (CBC News) – Fish kills on two P.E.I. salmon-spawning rivers have been “catastrophic,” says a UPEI scientist. Mike van den Heuvel, a toxicologist with the Canadian Rivers Institute, says most Islanders are unaware of just how serious the fish kills on western P.E.I. have been. “The fish kills are particularly catastrophic. There are 10 first-class salmon spawning rivers left on P.E.I. And two of those rivers have now been hit by fish kills.” Pesticides are almost always to blame for massive fish kills, he said. They wash from farm fields into rivers during heavy rains. The province has a mandatory buffer zone between fields and rivers of 15 metres. But to stop fish kills, van den Heuvel said, that zone needs to be bigger and government has to get tougher about enforcement. “There’s never been any serious prosecution of these events. Oilsands companies killed 1,600 ducks and had to pay $3 million, [but] nobody has ever had to pay anything for the millions of fish that have died on P.E.I.” […]

P.E.I. river fish kills called ‘catastrophic’