Scientists are seeing tropical fish in Nova Scotia with more frequency, and their arrival is prompting concerns about what their presence could mean for local species down the road. Other tropical fish found during the expeditions included the spotfin butterflyfish. Tropical fish are being dragged north by warm water masses and storms, according to scientists. The waters off Nova Scotia are too cold for tropical fish to survive through the winter, for now, says Worm. (Fisheries and Oceans Canada)Stanley said tropical fish species could also end up transporting parasites here.

Source: CBC News March 16, 2026 16:43 UTC