Retail chain Aldi Süd has announced a global policy to end eyestalk ablation in its shrimp supply chain by 2030 and implement electrical stunning for all of the farmed shrimp it sources by 2035.
With this move, all 11 of the U.K.’s major supermarkets have now set time-bound commitments on shrimp welfare.
Amid growing regulatory and public scrutiny, Aldi Süd’s shrimp pledge completes a shift that began with Sainsbury’s, M&S, and Tesco in 2024, followed by such retailers as Waitrose, Iceland Foods, Co-op, and Morrisons in 2025, and then Asda and Lidl GB earlier this year.
While Aldi Süd, which was recently ranked in Tier 4 of U.K.-based animal welfare organization Crustacean Compassion’s annual company rankings, was the last of the major retailers to set a timeline, its deadlines extend beyond some competitors, and several milestones have been targeted for implementation as early as this year. The retailer has also committed to annual public reporting on its progress, and the policy applies across its global markets, including Europe and the U.S.
The latter distinction from other grocer commitments is significant, according to the International Council for Animal Welfare (ICAW), as shrimp welfare pledges have largely been made on a market-by-market basis. Lidl, for example, has so far committed only to introducing electrical stunning for shrimp sold in the U.K., with no timeline for other European markets.
“We expect similar reporting from all other supermarkets,” ICAW Head of Invertebrate Welfare Policy Jonas Becker told SeafoodSource.
Regarding Aldi Süd’s longer timeline, Becker suggested this reflects scale rather than reluctance, noting the retailer’s exposure to less mature aquaculture markets in Southeast Asia, where infrastructure constraints are more pronounced.
“Given the scale of their scope and supply chain complexity, we acknowledge the necessity for a comparatively longer timeline; however, we anticipate that other retailers will be able to fulfill their pledges according to the timelines they set,” he said. “We do expect all actors, including Aldi Süd, to transition as fast as possible, particularly in markets like the U.K. where seafood suppliers are increasingly sourcing electrically stunned shrimp.”
Ensuring these commitments translate into verifiable change at the farm level will be critical, according to Becker, who pointed to certification bodies such as the Aquaculture Stewardship Council (ASC) as key actors that can perform third-party audits – particularly of electrical stunning – to validate progress.
At the same time, upcoming E.U. legislation, including the Empowering Consumers for the Green Transition (ECGT) and Green Claims Directive, is expected to increase scrutiny of sustainability and welfare claims and, thus, drive change, especially for multinational retailers.
Though electrical stunning is commercially available, scaling it globally remains complex, Becker said.
He explained that shrimp-farming operations vary widely across regions such as Asia and Latin America, with differences in pond design, harvest methods, farm size, and logistics meaning that technologies often need to be adapted to local conditions. Integration into automated harvest lines – typically required for efficiency – adds further capital and operational challenges.
Compared to stunning commitments, the phase-out of eyestalk ablation, which is the practice of removing one eyestalk from breeding females to induce spawning, is arguably more biologically and operationally complex, according to Becker.
Becker acknowledged the scaling challenge, particularly for industrial hatcheries, but pointed to increasing industry alignment, with all major U.K. retailers having now committed to ending the practice by 2030.
“The date of 2030 has been endorsed by the ASC, and as a leading certifier, we are optimistic that they and the industry will coordinate to address these challenges,” he said. “From our perspective as an animal advocacy organization, the case is clear: Consumers are shocked and disgusted when we show them footage of prawn eyes being cut off and strongly condemn the practice. Mutilating animals without anesthesia is causing pain and is a practice we need to move away from as fast as realistically possible. Scientific studies show that it is indeed possible for hatcheries to operate without it.”
One of the underlying issues with such a phase-out is how the cost of welfare improvements is distributed. Becker said responsibility ultimately lies with retailers, given their control over product specifications and consumer-facing claims, but emphasized that the transition is becoming increasingly collaborative.
“As the ecosystem develops to adapt to new stunning methodology, we see retailers, seafood suppliers, and producers working together to future-proof their business and adhere to evolving consumer expectations,” he said.
Regarding that collaboration, he specifically pointed to the role of nonprofits such as the Shrimp Welfare Project, which through its Humane Slaughter Initiative is helping eligible farmers transition by providing electrical stunners and implementation support free of charge.
Beyond implementing stunning and eliminating ablation, other welfare concerns remain.
Becker highlighted 2024 analysis by Rethink Priorities that identifies additional key welfare risks in shrimp farming, including high stocking densities, poor water quality, elevated ammonia levels, and low dissolved oxygen – all of which can contribute to prolonged suffering.
“We believe the first step toward addressing these even bigger welfare concerns would be to start tracking not only basic welfare outcomes such as mortality and morbidity rates but also inputs such as stocking densities and critical water quality parameters and implement protocols to intervene when critical thresholds are crossed,” he said.
Beyond shrimp, Becker said similar welfare gaps are emerging across aquaculture and fisheries, including the need for species-specific stunning methods and improvements in water quality and stocking density management.
If viable solutions are identified, he expects retailer-led change to follow a similar trajectory.
“Once we have a clear understanding of the welfare problems and find pragmatic solutions, I would expect that consumers will demand these solutions to be implemented,” Becker said. “The case for prawn welfare clearly shows that the empathy of the average consumer does not stop at pigs or chickens but encompasses even animals without a spine living below the water surface.”
