Could fish be a secret ingredient for rice farmers to avoid disease and make more money?

Farmers in Senegal are welcoming fish into their rice paddies. The hope is they'll fertilize the crop, be a source of food ... and eat the snails that carry parasitic worms. Farmers in Senegal are welcoming fish into their rice paddies. The hope is they'll fertilize the crop, be a source of food ... and eat the snails that carry parasitic worms.