The recent die-off of hundreds of fish in Toronto's Topham Pond is attributed to high temperatures and low oxygen levels in the water. The Toronto and Region Conservation Authority (TRCA) and the Ontario Ministry of Environment, Conservation and Parks (MECP) agree on these causes. Previous incidents have been linked to similar environmental conditions, particularly in shallow ponds. The MECP conducted tests and found no evidence of a chemical spill. Further water quality tests are underway to determine exact causes and conditions leading to the die-off.
"Similar incidents have previously occurred elsewhere within TRCA's jurisdiction, particularly in shallow ponds, and are often associated with low oxygen levels or changes in water temperature."
"The MECP said its own test results found no indications of a chemical spill in the area that killed off the fish."
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