Just doesnt make sense for that to happen if I were to maintain perfect water quality, which wouldnt be hard to do with one fish and frequent water changes. I could see how something would get stunted in poor water conditions just not with clean water.
For example I was at a pet store and I asked the guy about a green terror he jad just gotten in on a trade and he told me "ya the guy gave it up because it got too big for his ten galln"

but the fish was awesome looking. THats why I got the idea in the first place. The fish was easily about 5-6 inches