I have seen here that SMB will not thrive with LMB or BG. My SMB are doing well with YP, GSH, RES, FHM , and lake chubsuckers in a 0.9 acre pond. I have multiple age classes due to spawning. I did provide spawning structure as recommended here. I moved 9 smaller SMB to my LMB/BG pond in the hopes that they might provide bonus catches, but I do not expect reproduction with LMB or BG. Wanted to thin out the SMB in the source pond due to how many are in there, even though they seem fat and happy. Great advice on this forum has really helped me with my ponds. A big thank you once again!