Mining-impacted freshwater fish

The controlling scientific record is the public Heavy Metal Index synthesis, supported by 10 named anchor sources and expressed for Mercury, Methylmercury, Lead, Cadmium, Chromium, Nickel.

ICS does not reproduce the source extraction here. Keeping the evidence on the independent index preserves source-level methods, units, species, basis, uncertainty, and review state. This note records only the institutional consequence of that evidence.

Capture catch geography and mining influence as routeable evidence fields, and prevent commercial-market fish data from standing in for subsistence or impacted-water populations.

This disposition may change taxonomy, analyte coverage, test basis, surveillance priority, disclosure, or claim language. It does not allow a market occurrence percentile or a dramatic single study to become an initial certification value.

The finding is published in two additional authority layers: the HMI evidence record and the HMTc certification interpretation. Distribution should prioritize regulators, public-health teams, laboratories, journalists while preserving those distinct roles in headlines, briefings, interviews, and social posts.