Good question, unknown answer.
Lots of work to do about zebra mussels.
It will revolve around this concept...if drum eat zebra mussels, how many zebra mussels can a drum eat? Then, how many drum can the water body support? Then, how fast will zebra mussels replace themselves after drum eat them? Then, what impact will big numbers of drum have on that environment?
So, any answers right now are speculation.


Teach a man to grow fish...
He can teach to catch fish...