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Fundulus diaphanus

Fundulus diaphanus-By Oksanna Brière

Fundulus diaphanus, commonly known as the Banded Killifish, is a freshwater fish species that is known for its remarkable ability to survive in polluted waters. One example of this can be seen in a study conducted in the mid-1990s, which investigated the impact of pollutants on the fish populations in the Passaic River in New Jersey. The study found that while most fish species in the river had severely declined due to the pollution, the Banded Killifish population remained stable and even increased in some areas.

Another study in 2008 showed that Banded Killifish were able to tolerate high levels of PCBs (polychlorinated biphenyls), a toxic chemical compound that was commonly used in industrial processes and has significant impacts on aquatic life. This study found that Banded Killifish were able to survive in contaminated waters and even reproduce, demonstrating their remarkable resilience to pollution.

These studies highlight the importance of Banded Killifish as indicator species for environmental health, and also demonstrate their potential use in bioremediation efforts, where they could be used to help clean up polluted waters. However, it is important to note that the survival of Banded Killifish populations ultimately depends on the preservation and restoration of their habitats, as pollution and other environmental stressors can still have negative impacts on their populations.

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