Well they do get stunted all the time in small ponds. Too many mouths not enough food. If a small pond around here has no harvest you will have lots of 11-13 inch skinny bass. If the bass are dink’s with a full belly, they are still dink’s. A healthy ecosystem will have a decent amount of big bass, not just short fat ones . Just because we think bass population “shouldn’t get out of hand,” they still do. It doesn’t really matter what we think about it, it’s kill or be killed in the world of bass. When fish have ample food, they get big. Simple