Animal Experiments: Fish
The question
To ask the Secretary of State for Science, Innovation and Technology, with reference to Replacing animals in science: A strategy to support the development, validation and uptake of alternative methods, published on 11 November 2025, what the evidential basis was for including the reduction of the use of fish endocrine disruption tests by the end of 2035 in Basket 3.
Answered by Kanishka Narayan
The Government’s publication “Replacing animals in science: A strategy to support the development, validation and uptake of alternative methods” sets out our long-term vision for a world where the use of animals in science is eliminated in all but exceptional circumstances. Multiple stakeholders and experts in this area, including Defra and the Veterinary Medicine Directorate, were consulted during the development of the three baskets approach, which groups animal tests according to how ready they are for replacement, based on the maturity of potential alternative methods. They concluded that basket 3 was the most appropriate timeline for fish endocrine disruption tests.
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