They look so cute in their aquariums … but they’re terrible. Sure, if you drop it. Many people are fed up with them and take them to rivers or ponds. Big mistake. They can encourage the goldfish plague. In certain scenarios they become real monsters.
Giants in the making
These friendly animals are known as Carassius auratus. And they became a real problem. Especially for the native species of swamps, lakes and rivers from around the world. Why? Well, it turns out that they can grow more than usual in the wild. They reach the size of a soccer ball. And its weight goes up to 2 kg. These invasive species are a threat to local ecosystems.
In fact, the Minnesota authorities in the United States discovered it. They called on the citizens not to release these fish. They are considered an invasive species in the state’s lakes and rivers. Several huge specimens are found in the Kellesee.
First of all, these species native to China are carnivores. They feed on the eggs of the local fish. These in turn feed on mosquito larvae in the water (they are natural insecticides). In addition, when foraging for food, they use a technique that involves shaking the ground.
Which brings us to the second problem. By lifting the mud from the ground, it makes previously buried nutrients float. Excessive algae growth is activated. In addition, this type of carp fish can cause diseases unknown to the local fish population.
A study was carried out in Australia a few years ago. They tracked 15 goldfish for a year. The aim was to determine how these species migrate. “We found that these fish can migrate into the river from the canals (where they are left by their owners). And from there to the system of the swamps, where they lay their eggs, ”the investigation pointed out. In one year they can cover a distance of more than 230 kilometers.
Another detail of these creatures is that they reproduce like rabbits. It is true, indoor aquariums limit their growth. But once you let go of her we can see what happens.
And that’s not all. Experts also warn of the consequences if water from aquariums is discharged into rivers and lakes. Diseases and parasites accumulate in these stagnant aquarium waters. This can affect sensitive ecosystems.
Are you aware of the problems the goldfish plague would bring? Do you have one in your aquarium and want to get rid of it? Experts recommend two options. Take it to an aquarium or “give it human euthanasia by putting it in the freezer”.