Which according to the Carver County Water Management Organization , between 30,000 and 50,000 of them were found in Big Woods Lake in Chaska , causing death and attack in several cities.
Not like many aquarium animals, goldfish are not native to Minnesota, they are violent when found in lakes and ponds, they pose a threat to water quality and health and ecological life in general.
Where these fish are hardy and very invasive like their close relative, the common carp, when they both stir up sediment from the lake bottom.
As these animals pull out plants while they feed, with this action they release phosphorus into the water, which increases the algae and decreases the transparency of the water, causing destruction to aquatic life that no longer exists in this dimension.
Uprooting native plants removes the habitat of native fish that depend on them, and goldfish compete with natives for food and shelter.