Marine non-predatory fish (sardine, anchovy, salmon, cod, herring, mackerel): HMTc Standard — page updateshttps://heavymetalcertified.com/standards/fish-marine-non-predatoryPublished revisions of this Heavy Metal Certified page.Marine non-predatory fish (sardine, anchovy, salmon, cod, herring, mackerel): HMTc Standardhttps://heavymetalcertified.com/standards/fish-marine-non-predatoryhttps://heavymetalcertified.com/standards/fish-marine-non-predatory#revision-194d5634f883951aSun, 20 Sep 2026 07:39:04 GMTThe Heavy Metal Tested & Certified standard for marine non-predatory fish, sardine, anchovy, salmon, cod, herring, mackerel, as fillet or muscle meat, fresh or frozen, stated as consumed. These lower-trophic species carry the lower government mercury ceiling; every limit is the strictest maximum level any credible government sets for the product.