Rice Yields Increased as Fish Combat Schistosomiasis
A study in Senegal showed that introducing predatory fish to rice paddies cuts parasite transmission while boosting output.
Updated on Oct. 4, 2026 in Environmental
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In research published September 15, scientists demonstrated that integrating Nile tilapia and African bonytongue into rice paddies effectively controls schistosomiasis. The dual-purpose method relies on fish to consume disease-carrying snails and fertilize crops.
Why it matters
This approach addresses a critical public health challenge while improving agricultural productivity. With millions across Africa requiring preventative treatment for schistosomiasis, integrating aquaculture into existing farmland offers a scalable, nature-based intervention.
The intervention achieved a 25% increase in rice yields compared to standard plots. While the study involved 40 farmers, the broader impact concerns the 254 million people currently requiring preventative schistosomiasis treatment globally.
The players
AfricaRice
An international agricultural research organization focused on improving rice productivity and the livelihoods of rice-farming communities in Africa.
World Health Organization
The United Nations agency responsible for international public health, which estimates that 254 million people require treatment for schistosomiasis.
The details
The strategy utilizes two biological mechanisms: African bonytongue — a freshwater fish that acts as a natural predator to the snails responsible for spreading the schistosomiasis parasite — and Nile tilapia, which provide essential nutrients to the rice crop. By consuming the intermediate hosts of the parasite, the fish break the disease transmission cycle. Concurrently, fish faeces serve as a natural fertilizer, enriching the paddy water and stimulating rice growth.
Timeline
September 15: The research report was officially published.
October 4, 2026: This article was published.
The Tech Race
This project integrates into the broader research agenda of AfricaRice, which seeks to optimize agricultural practices across the continent. By focusing on low-cost, biological interventions, it marks a shift from solely chemical-based agricultural and public health strategies.
This method offers a direct, low-cost productivity upgrade for farmers currently struggling with both crop yields and public health risks. Adoption requires access to specific fish stocks and is currently being targeted for expansion across the broader African agricultural sector.
The takeaway
The research confirms that integrated aquaculture can solve two distinct agricultural and health problems simultaneously through a single biological lever. Future developments to watch include the scaling benchmarks provided by AfricaRice as they expand the program from the pilot phase to wider implementation.
What happens next
AfricaRice has announced plans to scale this integrated aquaculture-agriculture project across multiple African nations, building on the initial pilot involving 40 farmers.
Further reading
Read more about nature-based agricultural innovations in our Environmental section.
Source note: This article includes information reported by Young Post Club.
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Would you support using fish to control pests in rice production rather than traditional methods?
