Bacteria found on some frogs' skin naturally protects the amphibian from a deadly skin disease that is already affecting 500 species of amphibians worldwide.
So let's talk about toxins... and fish. They normally don't go together. In fact, most living things would prefer to avoid living near toxins. However, at times they can be very helpful, as shown in a recent strategy to help protect the beautiful rainbow trout against Coldwater Disease.