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![Occurrence and risks of polychlorinated biphenyls in water, sediment, and fish of Wupa River, Nigeria](https://image.oaes.cc/7b31189f-2828-415e-be07-3af319fd74cf/5143.fig.4.jpg)
Figure 4. PCB congener profiles in fish samples: (A) cyprinus carpio; (B) ethmalosa fimbriata; (C) heterobranchus bidorsalis; (D) clarias anguillaris; and (E) oreochromis niloticus. CC: Cyprinus carpio; CA: clarias anguillaris; EF: ethmalosa fimbriata; ON: oreochromis niloticus; PCB: polychlorinated biphenyl.