Fish Welfare Initiative aims to improve the welfare outcomes of billions of fish through researching and executing targeted, highly-scalable welfare interventions.


An estimated 73-180 billion fish are farmed each year. That makes them by far the most farmed vertebrate in the world. And yet, little is being done to safeguard their welfare.


Our mission is to change that. As beings very different from ourselves, fish have needs that are not always obvious or emotionally compelling to us. However, just like humans, fish have a serious interest in avoiding pain and living a good life.



We want to have the greatest possible positive impact on fish's lives, and we're open to different avenues for achieving that. We strive to be evidence-based at every level: from which species to work on to which region to work in.


Currently, we are researching the most promising changes that can be made to reduce suffering. These include better water quality, less stressful handling, and more humane slaughter methods. We will publish our findings on our blog.


We don’t merely think about making the world better. At our heart, Fish Welfare Initiative is all about direct impact. Be these simple wins, like installing more humane equipment in farms, or long-term gains like legislative change. 


One approach we’re currently excited about is working with individual facilities to implement changes at the farm level. This would help us gain a better understanding of how different interventions are likely to be received and to influence welfare.


We will have succeeded only as much as we’ve had a positive impact on the lives of fish. We subsequently consider expected impact very carefully and use it to guide all that we do.

Based on our preliminary understanding and estimates, we expect to be able to improve the lives of millions of fish. Billions, if we scale even further. We envision progressing the world further towards one where humanity has expanded our moral circles to include all sentient life.


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Incubated Through

Charity Entrepreneurship

A Project of

Effective Altruism

About Us

Fish Welfare Initiative (“FWI”) is operating through a fiscal sponsorship with Players Philanthropy Fund (Federal Tax ID: 27-6601178), a Maryland charitable trust with federal tax-exempt status as a public charity under Section 501(c)(3) of the Internal Revenue Code. Contributions to FWI are tax-deductible to the fullest extent of the law.

Fish photo by Paco Joss on Unsplash