I feel a bit bad about the size of most of them, goldfish in the wild grow 12 - 14 inches in length, in tanks they grow 1 - 2 inches. I'd love a nice fish tank to look at but I wouldn't feel right having one under at least 5 foot long and nearly as deep and there's no way that's fitting in my flat. Plus all the cleaning they need.
Bit more googling and I came across a "planted tank" reddit - so I guess that's what it's called. Going to do some more reading at some point, but from a cursory scan of one thread you can design a tank that doesn't need cleaning if you exclude fish.
I feel a bit bad about the size of most of them, goldfish in the wild grow 12 - 14 inches in length, in tanks they grow 1 - 2 inches. I'd love a nice fish tank to look at but I wouldn't feel right having one under at least 5 foot long and nearly as deep and there's no way that's fitting in my flat. Plus all the cleaning they need.