Rare contagious cancer discovered in wild catfish0

• SCIENCE, Science / Health, Science Mission Directorate, scientists, Space, Space Communications & Navigation Program, Space Launch System (SLS), Space Telescope, space-x-ipo, SpaceX
• July 25, 2026

Mysterious black lesions found on brown bullhead catfish (Ameiurus nebulosus) in Lake Memphremagog, straddling the borders of Canada and the United States, turned out to be a type of transmissible melanoma. Credit: Phil Degginger/Alamy Researchers have discovered a contagious cancer in catfish, just the fourth example of tumor cells spreading naturally from one animal to