I did subscribe to the fish will never outgrow their tank idea for many years as the goldfish i kept in bowls never got that big! Then i learn't about filtration and the growth inhibitors that can build up in the tank if the water isn't looked after properly.
So yes, i guess in an unfiltered tank, the fish should never outgrow it's home. That said it would probably die from the poor water conditions before it get's a chance to grow that much anyway!
So yes, i guess in an unfiltered tank, the fish should never outgrow it's home. That said it would probably die from the poor water conditions before it get's a chance to grow that much anyway!



. I think the only retailer you can really trust is a pharmacist!