A new study has shown that fish near the Quebec-Vermont border may have been catching a transmissible cancer from each other for more than a decade. Anglers have reported black lesions on the fish that have now been identified as melanoma skin cancer — the kind that's linked to sun exposure in people. Quebec's Ministry of the Environment recommends not eating the fish with tumours, even though there's no evidence it's harmful to human health. Dragon said Vermonters sometimes do eat them and she believes they're safe to eat. CORRECTION (July 24, 2026): A previous version of this upload identified Vicki Blazer as a co-author of the study. In fact she is a USGS researcher who contributed to the study. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@cbcnews Subscribe to CBC News on Snapchat: https://bit.ly/3leaWsr Subscribe to CBC News on WhatsApp: https://www.whatsapp.com/channel/0029Vb6MSjH9Bb63S9tbQa1Y Download the CBC News app for iOS: http://apple.co/25mpsUz Download the CBC News app for Android: http://bit.ly/1XxuozZ »»»»»»»»»»»»»»»»»» For more than 80 years, CBC News has been the source Canadians turn to, to keep them informed about their communities, their country and their world. Through regional and national programming on multiple platforms, including CBC Television, CBC News Network, CBC Radio, CBCNews.ca, mobile and on-demand, CBC News and its internationally recognized team of award-winning journalists deliver the breaking stories, the issues, the analyses and the personalities that matter to Canadians.