September brought several Ontario updates on invasive aquatic plants, along with new Great Lakes conservation work. Here are five stories that could matter to TEAS members and other freshwater hobbyists.
Water soldier remains a concern in Lake Simcoe
September 4. The Lake Simcoe Water Soldier Working Group asked visitors to report suspected sightings outside Cook’s Bay and clean, drain, and dry watercraft and equipment. Water soldier is prohibited in Ontario and should never be used in an aquarium or water garden.
Partners expand hydrilla control at Hillman Marsh
September 17. The Invasive Species Centre announced a multiyear monitoring and control program for Canada’s only known hydrilla population, detected in Essex County in 2024. Tiny plant fragments can spread on gear; careful plant identification and disposal matter.
Ontario reports an invasive species trade conviction
September 10. An Ontario enforcement notice says a Scarborough food business and its directors were fined a total of $27,000 for importing and selling prohibited invasive species, including frozen snakehead fish. This was a food trade case. Check Ontario’s species rules before acquiring or exchanging unfamiliar fish.
New Great Lakes water quality projects announced
September 9. The Canada Water Agency announced $6.6 million for 31 partner led projects, including work on harmful algae, wetlands, and Toronto waterfront habitat. These projects concern the health of local waters and native species; they do not change home aquarium water guidance.
Aquatic species at risk funding opens
September 16. Fisheries and Oceans Canada opened a call for conservation projects, with the Lower Great Lakes watershed among its priority areas. This could interest TEAS if the club considers a conservation partnership. Applications close November 16, 2026.
TEAS takeaway: Identify aquatic plants before sharing them, keep aquarium species out of natural waters, and watch for local conservation opportunities.
