As rainman says LMB like to eat YP. If your 12" bass don't eat the 5"-7" YP the bass 14"-15" will eat them. Young YP have to live a long time in a pond with hungry bass until YP are 8" long and relatively safe from average size bass predation. This is why YP offspring rarely grow to harvestable size with LMB present. Larger CC also eat numerous YP as they both hang out near the bottom. YP are inactive at night on the bottom when CC start hunting forage fish. Stock your larger perch every few years and they can maintain good numbers in your pond. If you harvest your LMB heavily this could allow BG to become numerous.


aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management