There are no minimum sample sizes or sampling frequencies established for the species to be sampled across different Marine Reporting Units (MRUs), nor are there threshold values for the proportion of batches that would indicate Good Environmental Status (GES), making it difficult to assess the status of the criterion. The GES of each fish species batch is individually determined based on contaminants listed in Regulation (EU) 2023/915: GES is achieved if the contaminants concentration values in the most important commercially exploited fish species do not exceed the threshold values from the regulation.