The Pollutive Effect of Goldfish on Freshwater Most recently, in Minnesota, USA, the Carver County Water Management Organization removed about 50,000 goldfish from a connector to Big Woods Lake. In Colorado, USA, and Hamilton, Canada, there have been reports of goldfish becoming an invasive problem. They also prey on other native species, disrupting the balance of the ecosystems they are introduced in. Furthermore, goldfish carry diseases and bacteria that harm other aquatic life in lakes and rivers. ![]() Therefore, releasing goldfish into a lake can quickly lead to overpopulation of goldfish in the lake and neighbouring freshwater bodies. They swim over long-distances, are larger breeders than most other freshwater fish species, and have no natural predators. Goldfish are one of the world’s worst invasive species. While goldfish make cute pets, in the wild, they become invasive species that disrupt the aquatic ecosystems, causing water pollution. The release of captive animals is perceived in Buddhism as an act of merciful liberation. Religious reasons may also cause people to buy goldfish from fish farms and release them. D ue to their long lifespans, they are also often released into the wild by pet owners who decide to stop taking care of their fish. The common goldfish are popular pets due to their low prices and low-maintenance nature. ![]() By En Qi Teo, Staff Researcher & Writer at Save The Water™ | December 10, 2020
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