To gain a better understanding of which pharmaceuticals could pose a risk to fish, 94 pharmaceuticals representing 23 classes were analyzed in blood plasma from wild bream, chub, and roach captured at 18 sites in Germany, the Czech Republic and the UK, respectively.
https://www.sciencedirect.com/science/article/pii/S0160412020321437
https://www.sciencedirect.com/science/article/pii/S0160412020321437