Measuring Agrichemical Residue Levels in Fish Populations Challenge The European Union recently passed new registration requirements for all agrichemical products. Under the new rules, agrichemical companies are now required to evaluate exposure and accumulation in fish in addition to livestock. They now must be able to demonstrate that the bioaccumulation in fish under expected usage scenarios do not threaten fish population levels or present human health risks if the fish are ingested. In order to meet the new requirements, agrichemical manufacturers needed a new kind of study designed to assess how chemicals are metabolized by fish and how they accumulate in living tissue. Solution Fish can be exposed to agrichemicals in two primary ways: through residues present in crops that are incor

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