Gold Fish Extra Large

The common household pets can grow far bigger in the wild and cause major disruption to ecosystems.

The city of Burnsville shared images showing several monster goldfish caught during a survey of Keller Lake.

It said goldfish could contribute to poor water quality by disturbing sediment and uprooting plants.

“Please don’t release your pet goldfish into ponds and lakes!” the city wrote in a tweet.

In Minnesota, goldfish are a regulated invasive species, which means it is illegal to release them into public waters.