Rome, February 12, 2026 - Up to 20% of the $195 billion global fisheries and aquaculture trade may be affected by some form of fish fraud, according to a new report released by the Food and Agriculture Organization of the United Nations (FAO). The findings matter for global supply chains, food safety systems and sustainable fisheries management, particularly as regulators and industry leaders seek stronger traceability standards.

The report, developed in collaboration with the Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, outlines the scope of seafood fraud and highlights advanced scientific tools now available to detect it.

While there is no official global baseline, empirical studies suggest that seafood fraud rates exceed those of meat and fresh produce. The diversity of more than 12,000 seafood species traded globally complicates enforcement and regulatory oversight.

FAO defines fish fraud as a deliberate act intended to deceive buyers. Common forms include:

Species substitution (selling tilapia as red snapper),
Mislabeling of origin or sustainability claims,
Adulteration (adding coloring to tuna),
Counterfeiting and simulation (imitation crab products),
Diversion and overrun, often linked to overfishing beyond quota limits.

In the United States, studies cited in the report suggest that as much as one-third of seafood products may be mislabeled, yet less than 1% of imports are tested, exposing gaps in inspection capacity and enforcement.

Restaurants appear particularly vulnerable. Research conducted in Los Angeles found mislabeling was low in processing plants but more common at retail and especially in sushi establishments. However, coordinated efforts between academia, government and industry reduced mislabeling rates in targeted areas by two-thirds over a decade.

The report underscores that economic incentives remain the primary driver of seafood fraud. For example:

Selling farmed Atlantic salmon as wild Pacific salmon can yield nearly $10 more per kilogram.
Farmed seabass marketed as locally sourced Italian product can sell for two to three times more than imports from Greece or Turkey.
Adding water to fish products to increase weight artificially boosts revenues.

Beyond consumer deception, fraud may conceal illegal, unreported and unregulated fishing, undermining fishery stock sustainability and distorting commodity prices in global markets.

Human health risks also emerge when mislabeled fish species are consumed raw or when seafood is improperly refrozen, increasing bacterial growth. From a sustainability perspective, masking geographic origin or over-quota landings threatens biodiversity and long-term resource management.

For policymakers and regulators, including agencies such as USDA and international bodies, the findings highlight the need for harmonized labeling requirements and improved traceability systems across borders.

The FAO report recommends mandatory inclusion of scientific names on labels where feasible and stronger documentation systems throughout the supply chain.

Advanced detection tools include:

Enzyme-linked immunosorbent assays (ELISA),
Stable isotope analysis to determine geographic origin,
Nuclear magnetic resonance techniques,
Portable X-ray fluorescence devices,
Machine-learning models to identify anomalies.

Carbon and nitrogen isotope ratios, along with fatty-acid composition analysis, can distinguish between wild and farmed fish-critical in high-value markets.

The Codex Alimentarius Commission is working alongside FAO to develop stronger international standards aimed at combating food fraud. Meanwhile, FAO continues to provide technical support to member countries seeking to improve laboratory capacity and enforcement systems.

Implications for Global Ag and Food Systems

For agribusiness professionals, seafood processors, exporters and policymakers, the report signals mounting pressure to strengthen transparency in international trade. As sustainability metrics increasingly shape market access, verified traceability and authenticity will become central to maintaining consumer trust and protecting margins.

In a global protein market facing supply chain disruptions, shifting demand patterns and regulatory scrutiny, combating seafood fraud is no longer optional-it is a prerequisite for resilient and sustainable food systems.