Small Fish: A Sustainable & Nutritious Solution?
- Consuming a mix of fish species can considerably improve nutrition while using fewer resources, according to Cornell University researchers.
- Sebastian Heilpern, a postdoctoral fellow and lead author of the study, emphasized the importance of biodiversity for both ethical and practical reasons."This research hopefully highlights the importance of...
- The study, funded by schmidt Sciences programs and others, involved identifying commonly consumed fish species and cross-referencing them with nutrient data. Researchers then used a computer model to...
Fish Biodiversity Boosts Nutrition, Offers Sustainable Seafood Options
Updated June 4, 2025
Consuming a mix of fish species can considerably improve nutrition while using fewer resources, according to Cornell University researchers. Their analysis reveals that combining certain species can provide up to 60% more nutrients than eating the same amount of a single, highly nutritious fish.
Sebastian Heilpern, a postdoctoral fellow and lead author of the study, emphasized the importance of biodiversity for both ethical and practical reasons.”This research hopefully highlights the importance of biodiversity, not just because of a moral quandary that we’re causing a mass extinction on Earth, but also because biodiversity can lead to better outcomes for fishery sustainability,” Heilpern said.
The study, funded by schmidt Sciences programs and others, involved identifying commonly consumed fish species and cross-referencing them with nutrient data. Researchers then used a computer model to determine optimal combinations of species that would meet dietary needs with the lowest fish biomass.
The model indicated that more biodiverse fisheries tend to favor species resilient to overexploitation and climate change. these species are typically smaller, lower on the food chain, and easily substituted with other small species containing similar nutrients.
Smaller fish, such as sardines, generally exhibit greater ecological resilience due to their faster growth rates. Optimal species also demonstrate tolerance to wider temperature ranges, enhancing their ability to withstand climate shocks. Tropical coastal regions, including the Coral Triangle, Australia, India, and the Amazon, tend to have the most biodiverse fisheries. While the U.S. has good biodiversity, Americans often consume only a limited number of species.
What’s next
Future research may focus on implementing these findings to promote sustainable fishing practices and encourage the consumption of a wider variety of fish species to improve nutrition globally.