Archive · 27 Jul 2026

Transmissible Cancer Found in Freshwater Fish

Transmissible Cancer Found in Freshwater Fish

Scientists have found a rare type of cancer in brown bullhead catfish that can spread from one fish to another.

This is the first time such a transmissible cancer has been found in freshwater fish.

The cancer, a type of melanoma, was discovered in Lake Memphremagog, which is in both the US and Canada.

The study was published in the journal Nature.

This discovery is important because it changes how scientists understand how cancer can spread.

It might also help in finding new ways to treat cancer in the future.

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