Soccer-sized goldfish have hijacked Lake Minnesota after being dumped by their owners.
Officials in Burnsville, a city about 15 miles (24 km) south of Minneapolis, have asked residents to stop releasing pet fish after recovering a few feet of aquatic invaders from the waters of the city’s Keller Lake. I issued a warning.
“Don’t let your pet goldfish go into a pond or lake!” City officials Said in a Twitter statement.. “They grow bigger than you think, pollute the bottom sediments and uproot plants, contributing to poor water quality.”
Released goldfish are known to grow several times larger than their domesticated size, causing havoc in the ecological nets that native species depend on to survive.
Goldfish (if stored in a home aquariumGoldfish) Usually less than 2 inches (5.1 cm) in length Live science previously reported.. However, when released in the wild, small fish can swell into huge scales. In 2013, a super-large goldfish caught on Lake Tahoe weighed more than 4 pounds (2 kilograms) and was approximately 1.5 feet (46 cm) long. Live science reported..
And despite their tendency to die in captivity, fish are as tough as they come in the wild — they can live for 25 years and can survive for up to 5 months without doing anything. oxygen.. (Fish have evolved to live in frozen ponds in winter, so instead their bodies convert carbohydrates to alcohol during this period, releasing it from the gills). When these traits are combined with rapid reproductive rates, goldfish can quickly take control of new habitats at the expense of native species.
Officials in Carver County, near Minnesota, removed approximately 50,000 goldfish from local waters in November 2020. According to the Washington Post.. The county has signed a $ 88,000 contract with a consulting firm to find a better way to manage fraudulent herds.
“Some goldfish may look like harmless additions to local waters, but they aren’t.” According to the statement From the Minnesota Natural Resources Bureau. “Goldfish belong to the family Cyprinidae, which quickly reproduces the harsh winter and survives, eating the bottom and stirring like a close relative, the carp, passing through the rainwater ponds of the city and having a great impact on the downstream lakes. And can flow into streams. “
Minnesota is not the only part of North America suffering from goldfish invasion. Alberta, Canada, faces a similar problem, with officials near Spokane, Washington spending $ 150,000 on the restoration of a nearby lake. KHQ news reported..
Originally published in Live Science