We feed our HSB into Dec, and start back in Feb. I didn't measure that HSB so I'm not sure about his growth in lenght. These fish were stocked into an existing pond full of GSF and GSD. There was also a healthy BG pop. A few LMB were there before we added some last year. The biologist that helps me with the pond felt like those were fish we added last year. They went in as 12"-14" amd that one was caught as an 18" fish. We electrofished one that was 5.5lb and 18.75". So it's not quite 75% growth. Closer to 50%, and not all of them have done that.