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Giant goldfish are taking over Canada's ecosystem
Canadian scientists Nick Mandrak from the University of Toronto came to the conclusion that about 20,000 goldfish live in ponds outside Ontario. In the extreme conditions of the ponds in this area, Goldfish, which were domesticated in Asia, thrive and grow up to 30 cm, crowding out other species. Despite the fact that these fish have been domesticated, they still remain a representative of the exuberant fauna of Asia. Goldfish have the ability to release dew hormones into the environment that affect everyone. This mechanism depends on the amount of resources available to them in a particular reservoir. As a result, the fish become incredibly large and begin to crowd out other species. All this is also facilitated by several distinctive features of this species: 1. They are well adapted to hypoxia (low oxygen consumption, which is low in Canadian waters) 2. They multiply quickly 3. Goldfish coexist and promote the reprod...
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