Usually such a pond will not result in a balanced pond. It will either end up LMB crowded or BG crowded (stunted). In extreme situations it may end up a LMB only pond or a BG only pond. Some ponds are more apt to stay near balance than others so it really depends. Any outside influence (fishing , seining , trapping etc ) will have a result on that status. There are many variables to consider so results are hard to generalize about. The good news is small ponds are easy to turn around through population adjustments.