Across Brazil's Amazonas state, many families rely on jaraqui for everyday meals. But researchers now say this commonly consumed fish is also showing signs of microplastic contamination. Because fish is a primary protein source for so many people in the region, the finding is adding to worries about what may be entering local diets. What's happening? Mongabay reported on July 20 that, in samples taken from Puraquequara Lake in eastern Manaus, 50…