I've Seen Reports Of People Dumping Goldfish Into Rivers And Lakes Where They've Grown...

[sandyRoe]

...so big they present a threat to other creatures. When they're relatively small how do they survive predation when their colour must make them stand out in their new environment?

[barry1010]

Is this the report? https://www.theguardian.com/environment/2021/jul/12/goldfish-dumped-minnesota-lakes-threatening-ecosystems

[Mamyalynne]

Well, some do survive and some don't.

We have some here about 15" long, in a very large ex mill lodge.

[sandyRoe]

That's it, Barry1010.
Maybe they're put into waters where there are no predators.

[Atheist]

Surely we've all seen carp a foot long? That's what goldfish grow into when they are out of the bowl. Not sure about their colour putting off larger predators; maybe larger predators aren't used to orange nibbles.