Greg.
I'm not an expert and hopefully Bill Cody will come along, but it seems to me the freshwater mussels could be too hard or get to large for optimum forage. I was told by Bill Cody when he honored me with a vist, that I had two kinds of snails in my ponds (I know they're not mussels) and one was too hard for the fish to actively feed on and the other was not. However, I don't have any redears and I'm well aware that redears have crusher teeth in the back of their throast unlike lot of other species. It will be interesting to see what Bill has to say.