(PICTURES) How Did Giant Goldfish Invade a Minnesota Lake?
Did you know that pet goldfish are considered an invasive species in the wild?
People are asked to rehome their fish rather than release them into the wild.
In general, it is a bad decision to release pets into the wild.
Even though goldfish seem to adapt and conquer in the wild, that is not typical for pets. Housepets cannot fend for themselves in the wild. Humans took that from animals when we decided to domesticate them. I know my cat most likely would not have survived the streets if did not get rescued from them.
When my cat was a kitten, a person witnessed a man throw him and his sister out the window of a moving vehicle. The witness reported the incident and, luckily, a police officer found and save the two kittens. They were barely a couple of months old and still needed their mother! There is no way they would have survived had it not been for human intervention.
Whether you have a fish or cat or anything else one might domesticate, it is never ok to throw your animal to the wild. It is cruel and can harm the individual animal and/ or its new environment.