How pollutants can impact fish parasites

Excessive amounts of chemicals and nutrients in the environment due to human activity and naturally occurring parasites affect the health of fish. Importantly, while both pollutants and parasites affect fish, pollutants can also directly or indirectly influence the number of parasites that in turn harm fish! This is an additional reason to reduce the number of pollutants in the environment.

In this article, I explain how pollutants can increase or decrease the number of parasites and explain what we can do to reduce pollution:
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A fish parasite (Lamprea; credit: Gena Melendrez on Shutterstock)