Experts are evaluating land-based fish farming as a potential method to reduce global reliance on intensive sea-fishing and marine aquaculture [1].
This shift matters because traditional marine fishing often damages fragile ecosystems and relies on data that may not reflect actual fish populations. By moving production to land, producers aim to promote responsible consumption without further depleting the oceans.
Marine science expert Daniel Pauly and other researchers have highlighted the fragility of current ocean stocks. Data suggests that approximately 60% of fish species are systematically overestimated in abundance, which contributes directly to the cycle of overfishing [2]. This discrepancy between reported numbers and biological reality makes terrestrial alternatives more urgent.
In France, a pilot land-based fish-farming project is currently being used to test the viability of raising species outside the ocean [1]. The need for such projects is underscored by regional data. In 2022, only 56% of the 347,000 tonnes of fish landed in France came from sustainably managed populations [3].
Beyond Europe, different models of land-based farming are appearing in the Caribbean. In Cuba, entrepreneurs are utilizing aquaponics to produce about 12 tonnes of tilapia per year [4]. These systems integrate fish farming with plant cultivation, creating a closed-loop environment that minimizes waste.
Researchers including Valérie Boisclair, Mathieu Prost, and Marianne Desautels are examining whether these terrestrial methods can scale sufficiently to replace industrial sea-fishing [1]. While marine aquaculture exists, it often introduces pollutants or escapes into the wild, issues that land-based tanks effectively eliminate.
Transitioning to land-based systems requires significant energy and infrastructure, but the potential to protect biodiversity is a primary driver. The goal is to create a food system where fish consumption does not come at the expense of ocean health [1].
“Approximately 60% of fish species are systematically overestimated in abundance.”
The movement toward terrestrial aquaculture represents a strategic decoupling of protein production from vulnerable marine habitats. If land-based systems like aquaponics and recirculating tanks can scale, they may mitigate the impact of systemic data errors in wild stock estimation and provide a stable food source that does not rely on the unpredictable health of the global ocean.
