we have very high amounts of alkalinity and tons of mussels like you cant imagine in most lakes in these parts .
I didn't know that helped them ,but I imagine it would give them lots more edibles . the fisheries folks say the high alkalinity helps the crappie in some lakes as well .
might be the populous and amount of angling pressure maybe ? don't know for sure what the lack of them is caused by ?
maybe red ears are slower to reproduce or don't have high numbers of offspring ?

