Thousands of goldfish have invaded the Teller Lake near Boulder, Colorado where it is growing in number and crowding out native species and it is worrying because the balance of the lake ecosystem will be lost.
These goldfishes in the lake are not native to this lake, few years ago someone has dropped few goldfishes in the lake two or three years ago and these number now to more than 4,000.
Officials are saying not to dump unwanted pets fish in the lake and it will harm the ecosystem and it is also illegal.
Jennifer Churchill, a Colorado Parks and Wildlife spokeswoman said, “Dumping your pets into a lake could bring diseases to native animals and plants as well as out-compete them for resources, everything can be affected. Non-native species can potentially wipe out the fishery as we’ve put it together.”
In 2012 a similar episode happened where they have to send electric pulses through the water while boating and remove the fishes, and they have collected nearly 3,000 goldfishes. Officials are saying that they will follow the same procedure this time.
The boat is having pointer which gives shock and they give shock to the fish by which the fish don’t die but come up to the surface from where they are picked. These fishes will be used at the local raptor rehabilitation center to feed the birds.