Winston :

You are describing a typical LMB crowded pond. Often this happens with LMB and BG but can be with LMB and tilapia or any combination of forage fish. See the link below and read pgs 10-12 on Management. One is with seine data the other is with catch data. Your case sounds severe so you may need to take more fish out. In conjunction with doing so can you get fingerling BG and tilapia out of the BG/tilapia crowded pond to put in yours. I would also recommend you look at the entire pond mgt book for basic info.


http://msucares.com/pubs/publications/p1428.pdf