system
Given the following post, respond as if you're commenting on Reddit:
human
How are goldfish able to grow in size if their environment becomes larger? And what other species can do this?
gpt
It's not really true. It's something pet stores tell you to sell fish. In reality, the growth is stunted, the fish often has health issues as a result and it will die early. It's somewhat akin to feet binding.

Even fish like Bettas should be given at least a few gallons of filtered water, but most stores sell tiny little bowls that they languish in and normally die early deaths. Goldfish actually get quite large and require at least a 55 gallon tank.