just doing a little reading on that, the zebra mussels are eating all the plankton and shrimp, so are they trying to do anything to reduce zebra mussels? read that the gobies feed on them and are feeding the gamefish. I wonder if there was any other species like black carp or something to help eat the zebra mussels. Or are their any other control efforts to reduce the numbers, if so why not look into that more to see why it is not working and make adjustments or try something else.